Dmu Space Analysis

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DMU Space Analysis

Preface

What's NewGetting Started

Basic Tasks

Workbench

Description

Customizing

Glossary

Index

Dassault Systmes 1994-99. All rights reserved.
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Preface

DMU Space Analysis is a CAD-independent product dedicated to advancedinterference analysis, sectioning and measurement. It addresses the design reviewenvironment of digital mock-ups (DMU) and can handle a wide range of products fromconsumer goods to very large automotive or aerospace projects as well as plants,

ships and heavy machinery.

DMU Space Analysis is a dedicated DMU Navigator workbench and is available onboth UNIX and Windows environments.

This guide is organized as follows:

Getting Started: Provides a scenario allowing you to get acquainted with theproduct.Basic Tasks: Provides a step-by-step guide for using DMU Space Analysis.Useful tips are given for getting the most out of the product.

Workbench Description: Describes DMU Space Analysis-dedicated menu barand workbench toolbar.Customizing: Contains information allowing you to customize your personalenvironment.Glossary: Provides definitions of terms that are specific to DMU Space Analysis.


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Using This Guide

The user should be familiar with basic Infrastructure Version 5 concepts such asdocument windows, standard and view toolbars.

To get the most out of DMU Space Analysis, use the following user guide wizard. It will

help you better locate information relevant to you as well as to the way you work.

User Guide Wizard

Go to:

I am a first time user The getting started tutorial. Once you have finished,you should move on to the user task section of thisguide. This steps you through basic procedures.

I have used DMU Space

Analysis before

Your DMU Navigator Version 5 session and start

reviewing your own documents. If you need somehelp in understanding tools and commands, use theon-line help. You can also take a look at the basicuser task section of this guide to locate informationwith which you are not already familiar.


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Where to Find More Information

Prior to reading this book, we recommend that you read the DMU Navigator User's

Guide.

You may also like to read the following complementary product guides, for which the

appropriate license is required:DMU Fitting Simulator User's GuideDMU Kinematics Simulator User's GuideDMU Optimizer User's Guide
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What's New?

New: Compare products command to detect differences between two products and identify

where material has been added and/or removed

Enhanced: Default computation type and clearance value as well as detailed computation

mode can now be set.


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Basic Tasks

Theme Purpose

Measure minimum distances as well as distancesalong x, y and z between products

Create sections, section slices and boxes, andsection cuts

Check for clash, contact and clearance conflicts

Compare products to identify differences (materialadded and/or removed)

Measure minimum distances and angles,properties and arc sections


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Calculating Distances between Products

This task explains how to measure distances between products. In this example, you will measuredistances (minimum distance and distance along z) between products in two different selections.

Insert all the sample cgr files in \online\samples\spaceanalysis.

You can measure minimum distance, distance along x, along y and along z between products in the

same selection, between products in the selection and other products in the document, or betweenproducts in two different selections.

1. Click the Distance icon in the DMU Space Analysis toolbar, orselect Insert -> Distance from the menu bar to calculate distances:

The Edit Distance dialog box and the dedicated Distance Tools toolbar appear.

The default distance analysis is measuring the minimum distance inside one selection.

2. Ensure that the first Type drop-down list box is set to Minimum.

3. Select a product, for example the Trigger.

4. Click the second Type drop-down list box and select Between two selections.

Defining computation types:Inside one selection (default type): within any one selection, tests each product of the selectioagainst all other products in the same selection.Between two selections: tests each product in the first selection against all products in thesecond selection.Selection against all: tests each product in the defined selection against all other products inthe document.


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5. Select another product, for example the Regulation_Command.

Note: You can check your selections by clicking in selection fields in the dialog box. Selectedproducts are highlighted in the specification tree.

Simply continue clicking to select as many products as you want. Products will be placed in theactive selection. To de-select products, reselect them in the specification tree or the geometry area.

6. Click Apply to calculate the distance:

A Preview window appears visualizing selected products and the minimum distance (represented bya line, two crosses and a value). The Edit Distance dialog box expands to show the results.

Using the Tools -> Options... command (DMU Navigator tab), you can change the default display

setting for the Preview window.

7.If necessary, pan, zoom and/or rotate in the Preview window to visualize the results better.


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Minimum distance and other information identifying all distance components is given in the expandeddialog box. x,y,z coordinates of start and end points on products selected for the distance calculation

as well as products themselves are identified.

You can also view the results in a separate viewer. To do so, click the Results window icon in thDistance Tools toolbar. Object viewing commands and commands in the Window menu are availablein this window. For example, you can tile the results window and the original document windowvertically or horizontally.

You can use other DMU Space Analysis Toolbar commands in the Results window to, forexample, measure surfaces.

8. Click the Type drop-down list box and select Along Z.

9. Click Apply.

Results are calculated and displayed in the dialog box and Preview window.


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You can combine distance measurements with other DMU Space Analysis toolbar commands.For example, create a section plane on a minimum distance between two products: the center of theplane is placed on the center of the measured distance. Then rotate the plane around its local axissystem visualizing the results in a viewer. You can, in this manner, check the minimum distance fromall angles and, if required, agree upon any design changes necessary.Note that you do not need to exit the Distance command. For more information, see Sectioning.

10. Click OK in the Edit Distance dialog box when done.

The distance definition and results are kept as specification tree features.

Creating Groups of Products:Prior to running your distance analysis, you can create groups containing the product(s) you want to

analyze using the Group icon in the DMU Management toolbar or Insert -> Group... in the menubar.

Groups created are identified in the specification tree and can be selected from there for the analysisOnly one group per selection can be defined.

For more information, see Defining Groups of Products in the DMU Navigator User's Guide.
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Sectioning

Using cutting planes, you can create sections, section slices, section boxes aswell as 3D section cuts of your products automatically.

Sectioning is dynamic (moving the plane gives immediate results). You can

manipulate the cutting plane in a variety of ways:Directly

Position it with respect to a geometrical targetChange its current position, move and rotate it using the Edit Position

command .

You can, for example, use sections to identify conflicts between products or tocheck minimum distances. You can also view sections in a separate results

window for finer analysis.

3D section cuts cut away the material from the cutting plane to expose the cavitywithin the product, beyond the slice or outside the box.

Creating Section Planes Creating Section Slices Creating Section Boxes


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Creating 3D Section CutsManipulating Section Planes

Directly

Positioning Planes with

respect to a Geometrical

Target

Positioning Planes using

the Edit Position CommandUsing the Section Viewer


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Creating Section Planes

This task explains how to create section planes.

1. Select Insert -> Sectioning from the menu bar, or click the Sectioning icon in the DMU Space Analysistoolbar to generate a section plane:

The section plane is automatically created and the Edit Section Plane dialog box appears. If no selection is

made, the plane sections all products.

The plane is created parallel to absolute coordinates Y,Z. The center of the plane is located at the center of thbounding sphere around the products in the selection you defined. Line segments visualized represent theintersection of the plane with all products in the selection.

A section plane has limits and its own local axis system identified in lower-case characters.The z-axis is thenormal vector of the plane. The section plane can be dynamically re-dimensioned and repositioned. For moreinformation, see Manipulating Section Planes Directly.

Note: Using the Tools -> Options... command (DMU Sectioning tab), you can customize settings for both thelocation of the center of the plane as well as the orientation of the normal vector of the plane.

P1 Functionalities

In Catia P1, you cannot select products to be sectioned: the plane sections all products. The plane is not keptas a feature when you exit the command and the Edit Section Plane dialog box does not appear. You cannotmanipulate the section plane directly using the cursor.

A Preview window, showing the generatedsection, also appears. Using the Tools ->Options... command (DMU Navigator tab),

you can change the default display setting


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for this window.

The Sectioning Tools toolbar is also displayed.

This toolbar contains a wide variety of tools letting you position, move and rotate the section plane as well as

create section slices and boxes. For more information, see Positioning Planes with respect to a GeometricalTarget, Positioning Planes Using the Edit Position Command, Creating Section Slices and Creating Section

Boxes.

You can also obtain a section cut and extract a 2D view. For more information, see Creating 3D Section Cuts

and Using the Section Viewer.

2. Click the Invert Normal icon in the Sectioning Tools toolbar to invert the normal vector of the plane:

This command is particularly useful when creating section cuts to obtain the desired cut.

3. Click to activate the field opposite Selection.

4. Click products of interest to make your selection, for example the valve.

Note: Simply continue clicking to select as many products as you want. Products will be placed in the activeselection. To de-select products, reselect them in the specification tree or in the geometry area.


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The plane now sections all selected products.

5. Click OK when done.

You can also select products before entering the Sectioning command (Sectioning icon or Insert-> SectioningThe plane created will section selected products.

You can combine sectioning with other DMU Space Analysis toolbar commands.For example, create a section plane on a minimum distance between two products (Distance command),penetration depth, clearance distance or contact result (Clash command): the center of the plane is placed onthe center of the measured distance or, in the case of a contact result on the center of the bounding spherearound products selected. Rotation of the plane around its local axis system only is available. Note that you donot need to exit Distance or Clash commands to access the Sectioning command.For more information on Distance and Clash commands, see Calculating Distances between Products or

Running Detailed Clash, Contact & Clearance Analyses.

Creating Groups of Products:

Prior to creating your section plane, you can create a group containing the product(s) of interest using the

Group icon in the DMU Management toolbar or Insert -> Group... in the menu bar.

Groups created are identified in the specification tree and can be selected from there for sectioning. Only onegroup per selection can be defined.

For more information, see Defining Groups of Products in the DMU Navigator User's Guide.


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Creating Section Slices

This task explains how to create section slices.To create section slices, you must first create the master section plane.


1. Select Insert -> Sectioning from the menu bar, or click the Sectioning icon in theDMU Space Analysis toolbar to generate a section plane:

The section plane is automatically created. If no selection is made, the plane sections allproducts.

The section plane is created parallel to absolute coordinates Y,Z. The center of the planeis located at the center of the bounding sphere around the products in the selection youdefined. Line segments visualized represent the intersection of the plane with all productsin the selection.

A section plane has limits and its own local axis system identified in lower-case characters.The z-axis is the normal vector of the plane. The section plane can be dynamicallyre-dimensioned and repositioned. For more information, see Manipulating Section Planes

Directly.

Note: Using the Tools -> Options... command (DMU Sectioning tab), you can customize

settings for both the location of the center of the plane as well as the orientation of thenormal vector of the plane.

This plane is the master plane and controls all operations on the section slice.

The Edit Section Plane dialog box and the dedicated Sectioning Tools toolbar appear.


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A Preview window, showingthe generated section, alsoappears. Using the Tools ->Options... command (DMU

Navigator tab), you can

change the default displaysetting for this window.

2. Click the Section Slice icon in the Sectioning Tools toolbar to create a section slice:

A second plane is created. Together both planes define a section slice through yourproducts. The master plane is highlighted for easier identification.

The generated section in the Preview window is automatically updated.

3. Position the cursor over one of the second plane edges, click then drag to translate thesecond plane in the desired direction, thereby adjusting the thickness of the section slice.

Note: As you move the cursor over plane edges, the cursor changes appearance andarrows identifying directions along which slice thickness can be defined appear. The

thickness of the slice is also indicated as you drag.


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The Sectioning Tools toolbar is also displayed when you create the master section plane.This toolbar contains a wide variety of tools letting you position, move and rotate themaster plane. For more information, see Positioning Planes with respect to a Geometrical

Target, and Positioning Planes Using the Edit Position Command.

You can also obtain a section cut and extract a 2D view of your slice. For more informationsee Creating 3D Section Cuts and Using the Section Viewer

4. Click the Invert Normal icon in the Sectioning Tools toolbar to invert the normalvector of the master plane.

This command is particularly useful when creating section cuts to obtain the desired cut.


You can also select products before entering the Sectioning command (Sectioning icon orInsert-> Sectioning). The master plane created will section selected products.


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Creating Groups of Products:Prior to creating your section plane, you can create a group containing the product(s) of

interest using the Group icon in the DMU Management toolbar or Insert -> Group... inthe menu bar.

Groups created are identified in the specification tree and can be selected from there forsectioning. Only one group per selection can be defined.

For more information, see Defining Groups of Products in the DMU Navigator User'sGuide.


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Creating Section Boxes

You can create boxes around the various areas of your product and then, usingthe Volume Cut command isolate the area on which you want to work.

This task explains how to create section boxes.

To create section boxes, you must first create the master section plane.Insert all the sample cgr files in \online\samples\spaceanalysis.

1. Select Insert -> Sectioning from the menu bar, or click the Sectioning iconin the DMU Space Analysis toolbar to generate a section plane:

The section plane is automatically created. If no selection is made, the planesections all products.

The section plane is created parallel to absolute coordinates Y,Z. The center ofthe plane is located at the center of the bounding sphere around the products inthe selection you defined. Line segments visualized represent the intersection ofthe plane with all products in the selection.

A section plane has limits and its own local axis system identified in lower-casecharacters. The z-axis is the normal vector of the plane. The section plane canbe dynamically re-dimensioned and repositioned. For more information, seeManipulating Section Planes Directly.

Note: Using the Tools -> Options... command (DMU Sectioning tab), you can

customize settings for both the location of the center of the plane as well as theorientation of the normal vector of the plane.


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This plane is the master plane and controls all operations on the section box.

The Edit Section Plane dialog box and the dedicated Sectioning Tools toolbarappear.

A Previewwindow, showingthe generatedsection, alsoappears. Usingthe Tools ->Options...command (DMU

Navigator tab),

you change thedefault display

setting for thiswindow.


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2. Click the Section

Box icon in theSectioning Toolstoolbar to create asection box:

A sectioning box iscreated. The masterplane is highlighted foreasier identification.

The generated sectionin the Previewwindow isautomatically updated.

3. Position the cursor

over one of the slavebox plane edges, clickthen drag to translatethe plane in thedesired direction,thereby adjusting thethickness of thesection box.

Note: As you movethe cursor over boxedges, the cursorchanges appearanceand arrows identifyingthe directions alongwhich box thickness isdefined appear. Boxthickness is alsoindicated as you drag.


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The Sectioning Tools toolbar is also displayed when you create the mastersection plane.. This toolbar contains a wide variety of tools letting you position,move and rotate the master plane. For more information, see Positioning Planes

with respect to a Geometrical Target, and Positioning Planes Using the Edit

Position Command.

You can also obtain a section cut and extract a 2D view of your box. For more

information, see Creating 3D Section Cuts and Using the Section Viewer.

4. Click the Invert Normal icon in the Sectioning Tools toolbar to invert thenormal vector of the master plane.

This command is particularly useful when creating section cuts to obtain thedesired cut.


You can also select products before entering the Sectioning command(Sectioning icon or Insert-> Sectioning). The master plane created will sectionselected products.

Creating Groups of Products:Prior to creating your section plane, you can create a group containing the

product(s) of interest using the Group icon in the DMU Management toolbaror Insert -> Group... in the menu bar.

Groups created are identified in the specification tree and can be selected fromthere for sectioning. Only one group per selection can be defined.

For more information, see Defining Groups of Products in the DMU Navigator

User's Guide.


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Creating 3D Section Cuts

3D section cuts cut away the material from the plane, beyond the slice or outside the box toexpose the cavity within the product.

This task explains how to create 3D section cuts using section planes.


1. Select Insert -> Sectioning from the menu bar, or click

the Sectioning icon in the DMU Space Analysistoolbar and create a section plane.

The Edit Section plane dialog box appears.

2. Click the Volume Cut icon in the Sectioning Toolstoolbar to obtain a section cut:

The material in the negative direction along the normalvector of the plane (z-axis) is cut away exposing thecavity within the product.

Click the Invert Normal icon to invert the normal vector and obtain the desired cut.

3. Re-click the icon to restore the material cut away.


When the sectioning tool is a slice: When the sectioning tool is a box:


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Manipulating Section Planes Directly

You can re-dimension, move and rotate section planes, or the master plane in the case of sectionslices and boxes, directly. As you move the cursor over the plane, the plane edge or the local axisystem, its appearance changes and arrows appear to help you.

Re-dimensioning:

Moving along the normal

vector

of the plane:

Rotating:

Moving in the x,y

plane of the

local axis system:

This task illustrates how to manipulate section planes directly.


1. Select Insert -> Sectioning from the menu bar, or click the Sectioning icon in the DMUSpace Analysis toolbar and create a section plane.

A Preview window, showing the generated section, also appears. The generated section isautomatically updated to reflect changes made to the section plane.Using the Tools -> Options... command (DMU Navigator tab), you change the default displaysetting for this window.

You can re-dimension the section plane:

2. Click and drag plane edges to re-dimension plane:

Note: A dynamic plane dimension is indicated as you drag the plane edge.
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You can view and edit plane dimensions in the Properties dialog box (Edit -> Properties or via thecontextual menu). The plane height corresponds to its dimension along the local x-axis and thewidth to its dimension along the local y-axis.This command is not available when using the sectioning command.

You can move the section plane along the normal vector of the plane:

3. Move the cursor over the plane, click and drag to move the plane to the desired location.

You can move the section plane in the x,y plane of the local axis system:

4. Press and hold down the left mouse button, then the middle mouse button and drag (stillholding both buttons down) to move the plane to the desired location.

You can rotate the section plane around its axes:

5. Move the cursor over the desired plane axis system axis, click and drag to rotate the planearound the selected axis.

Click the Reset Position icon in the Sectioning Tools toolbar to restore the center of theplane to its original position.

6. Click OK in the Edit Section Plane dialog box when done.


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Positioning Planes with respect to aGeometrical Target

You can position section planes, section slices and section boxes with respect toa geometrical target (a face, an edge or a reference plane). In the case ofsection slices and boxes, it is the master plane that controls how the slice or boxwill be positioned.

Note: The master plane is highlighted in the geometry area for easyidentification.

This task illustrates how to position section planes with respect to a geometricaltarget.


1. Select Insert -> Sectioning from the menu bar, or click

the Sectioning icon in the DMU Space Analysis toolbar and create a sectionplane.

The Sectioning Tools toolbar is displayed.

A Preview window, showing the generated section, also appears. The generatedsection is automatically updated to reflect changes made to the section plane.Using the Tools -> Options... command (DMU Navigator tab), you change thedefault display setting for this window.

2. Click the Geometrical Target icon in the Sectioning Tools toolbar toposition the plane with respect to a geometrical target.

3. Point to the target of interest:

A rectangle representing the plane appears in the geometry area to assist youposition the section plane. It moves as you move the cursor.

4. When satisfied, click to position the section plane.


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Note: You can also position section planes orthogonal to edges. Simply click thedesired edge.

Click the Reset Position icon in the Sectioning Tools toolbar to restorethe center of the plane to its original position.



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Positioning Planes Using the Edit PositionCommand

In addition to manipulating the plane directly in the geometry area, you can position the section

plane more precisely using the Edit Position command. You can change the current position,move the plane to a new location as well as rotate the plane.

In the case of section slices and boxes, it is the master plane that controls how the slice or boxwill be positioned.Note: The master plane is highlighted in the geometry area for easy identification.

This task illustrates how to position the section plane using the Edit Position command.


1. Select Insert -> Sectioning from the menu bar, or click the Sectioning icon in the DMUSpace Analysis toolbar and create a section plane.

The Sectioning Tools toolbar is displayed.

A Preview window, showing the generated section, also appears. The generated section isautomatically updated to reflect changes made to the section plane.Using the Tools -> Options... command (DMU Navigator tab), you change the default displaysetting for this window.

2. Click the Edit Position icon in the Sectioning Tools toolbar to enter parameters defining theposition of the plane:

The Edit Position dialog box appears.

You can change the current position of the section plane with respect to the absolute axis systemof the document:

3. In the Edit Positiondialog box, click X, Yor Z radio buttons inthe Current Position

box to position thenormal vector (z-axis)of the planeperpendicular to theselected absolutesystem axis.

Click Y for example.The plane ispositionedperpendicular to theY-axis.


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You canclearly see

products inconflict andproducts incontact inthe sectiongenerated.

4. Enter values in Origin X, Y or Z boxes to position the center of the plane with respect to theabsolute system coordinates entered.

Note: By default, the center of the plane coincides with the center of the bounding sphere aroundthe products in the current selection.

Using the Tools -> Options... command (DMU Sectioning tab), you can customize settings forboth the normal vector and the origin of the plane.


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You can also move the section plane to a new location. Translations are made with respect to thelocal plane axis system.

5. Enter thetranslation stepdirectly in theTranslation spin boxor use spin box

arrows to scroll to anew value, then click-Tx, +Tx, -Ty, +Ty,-Tz, +Tz, to move theplane along theselected axis by thedefined step.

Note: Units arecurrent units setusing Tools ->

Options.Change thetranslation step to25mm and click +Tzfor example. Theplane is translated 25mm in the positivedirection along z.


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You can rotate thesection plane.Rotations are madewith respect to thelocal plane axissystem.

6. Enter the rotationstep directly in the

Rotation spin box oruse spin box arrowsto scroll to a newvalue, then click -Rx,+Rx, -Ry, +Ry, -Rz,+Rz, to rotate theplane around theselected axis by thedefined step.

Note: Units are

current units setusing Tools ->Options.

Change the rotationstep to 45 degreesand click +Ry forexample. The planeis rotated 45 degreesin the positivedirection around they-axis.


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Use the Reset Position icon in the Sectioning Tools toolbar, undo and redo icons in theEdit Position dialog box to restore the section plane to its original position, cancel the last actionor recover the last action undone respectively.

You can view and edit plane dimensions in the Properties dialog box (Edit -> Properties or via thecontextual menu). The plane height corresponds to its dimension along the local x-axis and the

width to its dimension along the local y-axis.This command is not available when using the sectioning command.

7. Click Close in the Edit Position dialog box when satisfied.



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Using the Section Viewer

You can view the generated section in a separate 3D viewer.

This task illustrates how to make the most of section viewer capabilities.


1. Select Insert -> Sectioning from the menu bar, or click the Sectioning iconin the DMU Space Analysis toolbar and create the desired section plane, slice orbox and corresponding section.

2. Click the Results

Window icon inthe Sectioning Tools

toolbar to view thesection generated ina separate 3D viewer:

The results windowappears displaying afront view of thesection only. 3Dviewing tools areavailable in this

viewer.

All the commandsavailable in theresults window are tobe found in theSectioning Toolstoolbar.

Select Window -> Tile Horizontally or Tile Vertically to organize yourwindows horizontally or vertically with respect to each other.

3. Click the Reframe icon to reframe the results window on the section.


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4. If desired, click the Lock 2D icon to display a 2D view in the resultswindow.

5. Orient the section in the results window:

Click the Flip Vertical or the Flip Horizontal icon to flip the section

vertically or horizontally 180 degrees.

Click the Rotate Right or the Rotate Left icon to rotate thesection right or left 90 degrees.

6. Click the Grid icon to display a 2D grid:

By default, grid dimensions are those of the bounding sphere. Simplyre-dimension the section plane to modify grid size.

You can edit the grid step, style and mode using the Edit Grid icon.


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7. Click the Edit Grid

icon to adjust gridparameters:

The Edit Grid dialogbox appears:

In the aboveexample, the gridmode is absolute andthe style is set tolines.

In the absolute mode, grid coordinates are set with respect to the absolute axis

system of the document.

The grid step is set to the default value of 100. Units are current units set usingTools -> Options.

8. Set the grid step to 25 x 25.

9. Click the Relative mode radio button:

In the relative mode, the center of the grid is placed on the center of sectionplane.

10. Click the Crosses style radio button.


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11. Click the Automatic filtering checkbox to adjust the level of detail of griddisplay when you zoom in and out.

12. Right-click the grid then select Coordinates to display the coordinates atselected intersections of grid lines. The Clean All command removes displayed

grid coordinates.

Note: Using the Tools -> Options... command (DMU Sectioning tab), you can

customize both grid and results window settings.

You can measure minimum distances and angles as well as other

properties on generated sections and keep these measures asannotations. For more information, see Additional Tools.

Select Analyze -> Graphic Messages -> Name, then move cursor overproducts to identify them. Selecting Coordinate displays the coordinatesof the selected point.Use the 3D Annotation icon to add 3D text to section views.


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13. Click OK in the Edit Grid dialog box when done.


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Analyzing Interferences

You can check your document for clash, contact and clearance conflicts todetermine whether document components interfere with each other.

Depending on your needs, you can choose between different levels of analysis,

ranging from a simple detection of interferences between parts to a detailedclash, contact and clearance analysis between products or elements. Resultsdiffer depending on the interference type selected for the analysis. For moreinformation, see below.

You can then analyze results using a variety of tools and visually browseinterferences in a preview window or separate viewer. You can write results to atext file, as well as compare results with the those of a previous computation orwith results stored in VPM.

Analyzing

Part to Part Clashes

Running Basic

Interference Analyses

Running Detailed

Clash, Contact & Clearance

Analyses


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Results differ depending on the interference type selected for the analysis. Asimple clash analysis does not necessarily give the same results as a fullinterference analysis (Clearance + Contact + Clash). The following illustratesexpected results for the three different analysis combinations:


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Analyzing Part to Part Clashes

This task explains how to check for clashes and clearances between parts in yourdocument.


1. Select Analyze -> Part to Part Clash in the menu bar.

The ClashDetectiondialog box isdisplayed.

The defaultoption is

Clash.

The Clash option (i.e. Contact + Clash) detects parts occupying the same spacezone and parts in contact.

The Clearance option (i.e. Clearance + Contact + Clash) detects parts occupying

the same space zone and parts in contact, and parts separated by less than thedefined clearance distance.

Results differ depending on the option selected for the analysis. For moreinformation, see figure.

2. Click the first part: Atomizer1.

3. Control-click the second part: Nozzle_1_2.1.


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The partsaredisplayed inthe ClashDetectiondialog box.


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4. ClickApply.

Thedetectionstatus icon isred and a

clash hasbeendetected.

5. Take acloser lookat the

geometryarea:

Points atwhich partsclash areidentified inred andthose atwhich

contact ismade inyellow.

6. If desired, repeat to detect clashes and contacts between other parts.

To run clearance analyses, click the drop-down list and select Clearance (i.e.Clearance + Contact + Clash), then enter a clearance distance in the field thatappears. Select parts for the analysis and click Apply.

Clearance conflicts are identified in green.

7. When done, click Cancel.


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Running Basic Interference Analyses

This task explains how to run basic interference analyses in your document. In this example, you willcheck for clashes within the selection that you will define.

Checking for interferences is done in two steps:

Initial computation: detects and identifies the different types of interference.Detailed computation: depending on your clash settings, computes the graphics representation ofinterferences as well as the penetration depth or minimum distance.


1. Select Insert -> Clash from the menu bar, or click the Clash icon in the DMU Space Analysis toolbto run the clash analysis:

The Check Clash dialog box and the dedicated Clash Tools toolbar appear.

The default interference analysis is detecting clashes and contacts between all components in thedocument.

Using the Tools -> Options... command (DMU Clash tab), you can customize the default type and

clearance value settings.

2. Set the first Type drop-down list box to Clash.

Defining interference types:

Clash: two products occupy the same space zone.Contact: two products are in contact.Clearance: two products are separated by less than the pre-defined clearance distance.

3. Activate the second Type drop-down list box and select Inside one selection.

Defining basic computation types:Between all components (default option): tests each product in the document against all otherproducts.Inside one selection: within any one selection, tests each product of the selection against all otherproducts in the same selection.

Advanced computation types are Selection against all (tests each product in the defined selection againsall other products in the document) and Between two selections (tests each product in the first selectionagainst all products in the second selection).


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4. Select the products on which you want to run the clash interference analysis, for example selectNozzle_1_2.1 and Body_1_2.1.

Simply continue clicking to select as many products as you want. Products are placed in the activeselection. To de-select products, reselect them in the specification tree or in the geometry area.

5. Click Apply to run the analysis:

The Check Clash dialog box expands to show the results of the initial computation. 1 interference hasbeen detected.

By default, analysis results are organized by conflict, with one conflict per line, in the List by Conflict tab.

The first conflict in the list is selected by default and a detailed computation has been run: the penetrationdepth is specified.

The penetration depth is the minimum distance by which it is necessary to translate a product to avoid aclash.

Note: Using the Tools -> Options... command (DMU Clash tab), you can customize the display in the

Results box.


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A Preview window also appearsshowing the clashing products only.The clash conflict is identified by redintersection curves, the penetrationdepth and the direction of extractionare indicated.

Note: Using the Tools -> Options...command (DMU Navigator tab), you

can change the default display

setting for the Preview window.

Color coding for conflicts:

Clash: red intersection curves identify clashing products.Contact: yellow triangles identify products in contact.Clearance: green triangles identify products separated by less than the specified clearancedistance.

6. If necessary, pan, zoom and/or rotate in the Preview window to visualize the interference better.

7. If necessary, select other interferences in the list to run a detailed computation and analyze results inthe Preview window.

As you select them, information in the Results box and the display in the Preview window are automaticaupdated.

By default, the detailed computation mode is set to Triangles + curves + penetration depth or minimumdistance. Using the Tools -> Options... command (DMU Clash tab), you can change the detailed

computation mode setting.

Note: The graphics display and storage of the triangular representation is costly and may adversely affecperformance.


The interference definition and results are kept as specification tree features.

For more detailed interference analysis, see Running Detailed Analyses.


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You can also view the selected interference in a separate viewer. To do so, click the Results windowicon in the Clash Tools toolbar. Object viewing commands and commands in the Window menu areavailable in this window. For example, you can tile the results window and the original document windowvertically or horizontally.


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Running Detailed Clash, Contact & ClearanceAnalyses

This task explains how to run detailed analyses in your document. In this example, you will run a fullinterference analysis (Clearance + Contact + Clash) between two selections that you will define.

Checking for interferences is done in two steps:

Initial computation: detects and identifies the different types of interference.Detailed computation: depending on your clash settings, computes the graphics representation ofinterferences as well as the penetration depth or minimum distance.


1. Select Insert -> Clash from the menu bar or click the Clash icon in the DMU Space Analysis toolbato run the interference analysis:

The Check Clash dialog box and the dedicated Clash Tools toolbar appear. An entry for the interferenceappears in the specification tree.

The default interference analysis is detecting clashes and contacts between all components in thedocument. Using the Tools -> Options... command (DMU Clash tab), you can customize the default type

and clearance value settings.

2. Activate the Type drop-down list box and select Clearance + Contact + Clash.

Defining interference types:

Clash: two products occupy thesame space zone.Contact: two products are in contact.Clearance: two products are

separated by less than thepre-defined clearance distance.

3. Enter the desired clearance value in the field that becomes active next to the interference type. Key in 3mm for example.

4. Activate the second Type drop-down list box and select Between two selections.

Defining computation types:

Between all components (default option): tests each product in the document against all otherproducts.Inside one selection: within any one selection, tests each product of the selection against all otherproducts in the same selection.Selection against all: tests each product in the defined selection against all other products in thedocument.Between two selections: tests each product in the first selection against all products in the secondselection.


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5. Define the first selection, for example, select the Regulator and the Regulation_Command.

6. Click to activate the second selection field opposite Selection 2 and select desired products, for examplthe two body products.

Note: You can check your selections by clicking in selection fields in the dialog box: selected products arehighlighted in the specification tree and in the geometry area.

Simply continue clicking to select as many products as you want. Products are placed in the activeselection. To de-select products, reselect them in the specification tree or in the geometry area.

7. Click Apply to run the analysis:

The Check Interferences dialog box expands to show the results of the initial computation. The number ofinterferences detected along with the type is indicated in the dialog box: 4 interferences have beendetected.

By default, analysis results are organized by conflict in the List by Conflict tab, with one conflict per line.

The first conflict in the list, in our example a clash, is selected by default and a detailed computation hasbeen run: the penetration depth is specified and red intersection curves identify clashing products aredisplayed.

The penetration depth is the minimum distance by which it is necessary to translate a product to avoid aclash.


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A Preview window appears showing theproducts in conflict only.

Color coding for conflicts:

Clash: red intersection curvesidentify clashing products.Contact: yellow triangles identifyproducts in contact.Clearance: green triangles identifyproducts separated by less than thespecified clearance distance.

Notes: Using the Tools -> Options... command, you can:

Customize the display in the Results box (DMU Clash tab)

Change the default display setting for the Preview window (DMU Navigator tab).

8. Select interferences in turn in the List by Conflict tab to run a detailed computation and analyze results

the Preview window.

As you select them, the Value and Status columns in the Check Clash dialog box, and the Preview windoware updated.

By default, the detailed computation mode is set to Triangles + curves + penetration depth or minimumdistance. Using the Tools -> Options... command (DMU Clash tab), you can change the detailed

computation mode setting.

Note: The graphics display and storage of the triangular representation is costly and may adversely affectperformance.

Filtering the display in the dialog box:You can filter the display of results in tabs by:

Type of interference: clash, contact or clearanceValue: no filter, increasing value or decreasing value. The penetration depth is reported in the Valufield for a clash, the minimal distance for a clearance, and a zero value for a contactStatus: all, not inspected, relevant, irrelevant. Until selected, all interferences are reported notinspected. Inspected interferences can be relevant or irrelevantInfo (available when comparing results): old, new.

Do not forget to click Apply filters to update the display.

9. Experiment with filter list capabilities and view the results.
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10. To change the status of a conflict, click the status field of the appropriate conflict:

The conflict status changes from relevant to irrelevant and vice-versa depending on the initial value.

You can also add comments to selected conflicts:

11. Add a comment to the selected conflict:

Click the Comment field.

Enter your comment in the dialog box that appears and click OK.2.

12. Click the List by Product tab to display interferences associated with products.

Analysis results are organized by product in the List by Product tab. There may be more than one conflictper product.

13. Select the product Body_1_2.1, which has both a contact and a clearance conflict, then More>> for afiner analysis.

The dialog box expands to include Detailed Results and Visualization boxes.

14. Click Product in the Visualization box to obtain an analysis by individual product.

The first conflict (a contact) between the body and the regulator is identified in the Detailed Results boxand is visible in the Preview window. The Contact conflict is visualized by yellow triangles.


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15. Click Next to display the clearanceconflict between the products:

The Detailed Results box and the Previewwindow are updated.

The clearance conflict is visualized bygreen triangles.

More than one conflict may beassociated with a product. Click theprevious and next icons in the DetailedResults box to browse through conflicts.

Using visualization filters for a more precise display in the Preview window:

All products: displays all products selected in the list.Product: displays products involved in the current conflict.Element: displays elements involved in the current conflict. Pairs of elements are listed in theDetailed Results box and can be browsed using the Next and Previous options.Note: This option is particularly useful when in Design mode.

All cases drop-down box: lets you select the graphics representation you want to see displayed (Allcases, None or Worst cases).

Note: Element and All cases options are only available in the following detailed computation modes:

Triangles + curves + penetration depth or minimum distanceCurves + penetration depth or minimum distance.

Opening a results window:

You can also view the selected interference in a separate viewer. To do so, click the Results windowicon in the Clash Tools toolbar.Object viewing commands and commands in the Window menu are available in this window. You can, forexample, tile the results window and the original document window vertically or horizontally.Visualization filters also apply to the results window. In addition to those listed above, you can de-activatethe Show geometry checkbox to show the graphics representation of the conflict only in the results window


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16. To write results to a text file, click the File export icon in the Clash Tools toolbar:

The Print dialog box is displayed.

Identify the directory in which you want to save the file.Enter a file name.Click Save to save the results in a text file.

You can combine clash results with other DMU Space Analysis toolbar commands.For example, create a section plane on the penetration depth (clash), minimum distance (clearance) or acontact result. Then rotate the plane around its local axis system visualizing the results in a viewer. In thecase of a contact result, the center of the plane is placed on the center of the bounding sphere around theproducts selected. Note that you do not need to exit the Clash command. For more information onsectioning, see Sectioning.

17. Click OK to exit when done.

The interference definition and results are kept as specification tree features.

Comparing Results:To compare results with a previous computation or with results stored in VPM, you must first select theappropriate compare option. This is done using the Tools -> Options... command (DMU Clash tab).

Old and new analysis results are identified in the Info column to assist you. You can filter results in thiscolumn to display all results, only new results or only old results.

When comparing results with those stored in VPM, a Keep column becomes available in List by Conflictand List by Product tabs. This column lets you define which results you want to store in the VPM databaseBy default, all results are kept. Simply click the Keep field of the appropriate conflict to toggle to No keep.

Creating Groups of Products:

Prior to running your interference analysis, you can create groups containing the product(s) you want toanalyze using the Group icon in the DMU Management toolbar or Insert -> Group... in the menu bar.

Groups created are identified in the specification tree and can be selected from there for the analysis. Onlone group per selection can be defined.

For more information, see Defining Groups of Products in the DMU Navigator User's Guide


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Comparing Products

This task explains how to compare two products to detect differences between them and identifywhere material has been added and/or removed. This is useful when comparing products atdifferent stages in the design process or when considering internal and external (client) changes tthe same product.

You can compare products defined with respect to the absolute axis system in the document(default value) or with respect to local axis systems (Use local axis systems option).

Insert sample files \online\samples\spaceanalysis\PEDALV1.model, PEDALV2.model andPEDAL.CATProduct.

Products you want to compare must be in the same CATproduct document.

1. Click the Compare

Products icon inthe DMU Space

Analysis toolbar:

The CompareProducts dialog boxappears.

2. Select one of the products you want to compare (old version), PEDALV1 for example.3. Click the New version box then select the other product you want to compare, PEDALV2 forexample.

The spatial coordinates of PEDALV1 and PEDALV2 are defined with respect to the absolute axissystem of the document.

Note: Multi-selection capabilities are not available in this command.

P1 FunctionalitiesIn Catia P1, you can only select products with no lower level details.

4. Set the computation accuracy by entering a value. In our example, we will keep the defaultvalue of 5mm.

Setting computation accuracy:The computation accuracy determines the size of the cubes used to represent the material addedand/or removed. A lower setting results in slower computation time, but a more precise calculationof differences.


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5. Move the slider to the right to set the display accuracy to 20mm for example.

Setting display accuracy:Independently of the computation accuracy, you can set the display accuracy to a coarser displayof the computation results to give a better graphics display performance.

By default, the display accuracy is set to the same value as the computation accuracy.

6. Select the type of comparison you want run from the Type drop-down list, Added + removed forexample.

Defining type:

Added + removed (default value): Computes differences where material has been bothadded and removed.Added: Computes differences where material has been added only.Removed: Computes differences where material has been removed only.

7. Click Apply to run the comparison:

A dedicated viewer appears showing the results. Added material is shown in red; removedmaterial in green.


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8. Repeat the comparison adjusting the display accuracy to the same value as the computationaccuracy (5mm):

9. Repeat the comparison adjusting the computation accuracy to 2mm.


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10. Click the Newversion selection

field in theCompareProducts dialogbox and selectPEDALV3:

Spatialcoordinates ofPEDALV1 andPEDALV3 aredifferent whendefined with

respect to theabsolute axissystem in thedocument but arethe same whendefined withrespect to localaxis systems.


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11. Set the computation and display accuracy as desired.

12. Click the Use local axis systems checkbox:

The Use local axis systems option lets you compare two products defined with respect to local axisystems.

13. Click Apply to compare PEDALV1 and PEDALV3:

Notice that you get the same results as you did when comparing PEDALV1 and PEDALV2: for the

purposes of this task, PEDALV3 is a copy of PEDALV2 that has been positioned differently in thedocument.


DMU Optimizer license:If you have a DMU Optimizer license, you can save the displayed results as 3Dmap typedocuments. The Save As dialog box is proposed when you click OK in the Geometric Comparisondialog box.

You can combine the compare products command with other DMU Space Analysis andDMU Navigator toolbar commands. For example, run a query for products immediatelysurrounding the added material (Proximity Query command in the DMU Data Navigation toolbar)and then analyze for clashes (Clash command). This offers the advantage of letting you, forexample, focus on a part of an engine rather than analyzing the whole engine and then having tosift through the results to find those relevant.


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Additional Tools

A certain number of additional tools are supplied with DMU Space Analysis.These tools let you measure the minimum distance and angle betweengeometrical entities or points, measure properties associated to selected itemsand measure arc sections.

To get the most out of these tools, set the Render Style to Shading with Edges.The various command options work differently depending on the selected renderstyle.

Measure Between and Measure Item commands are useful whenperforming sectioning operations to, for example, annotate the generatedsection. To do so, the Measure Keep icon should be active. For more informationon sectioning operations, see Sectioning.

Measuring Minimum

Distances & Angles

between Geometrical

Entities or Points

Measuring PropertiesMeasuring Arc

Sections


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Measuring Minimum Distances & Angles betweenGeometrical Entities or Points

Restrictions:

cgr files do not permit selection of individual vertices, edges or surfaces.Visualization Mode does not permit selection of individual vertices, edges or surfaces. To select thesgeometrical entities, switch to Design Mode (Edit -> Design Mode).

This task explains how to measure distances and angles between geometrical entities (surfaces, edges,vertices and entire products) or between points.

Insert all the sample model files in \online\samples\spaceanalysis.

1. Click the Measure Between icon in the DMU Space Analysis toolbar or select Analyze-> MeasureBetween from the menu bar.

The Measure Between dialog box and the Measure Tools toolbar appear.

The Measure Tools toolbar has three icons:

Measure Keep : lets you keep the current and subsequent measures as features. This isparticularly useful if you want to keep the measures as annotations for example. Double-clicking anexisting measure lets you re-edit the presentation of the measure, review information in the dialog bo

or delete measures.

Measure Dialogs : lets you show or hide the associated dialog box.

Exit Measure : lets you exit the measure. This is useful when the dialog box is hidden.

2. Set the desired measure type in the Measure type drop-down list box.


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Defining measure types:

Between (default type): measures distance and angle between defined reference and target items.Chain: sets the target item as the reference item for the next measure.Fan: fixes the reference item selection so that you always measure from this item.

3. Set the desired measure mode in the Target and Reference mode drop-down list boxes.

Defining reference and target measure modes:

Any geometry(default mode): measures distances and angles between defined geometrical entities(points, edges, surfaces, etc.).Any geometry, infinite: measures distances and angles between planar faces mapped onto infiniteplanes and straight line segments mapped onto infinite lines. For all other selections, the measuremode is the same as any geometry.Note: Measure points are red when points are not on the topology.

Point on geometry: measures distances and angles between points selected on defined geometricalentities.Point only, Edge only, Surface only: measures distances and angles between points, edges andsurfaces respectively. Dynamic highlighting is limited to points, edges or surfaces and is thussimplified compared to the Any geometry mode.

Intersection: measures distances and angles between intersection points between two edges or anedge and a surface. In this case, two selections are necessary to define target and reference items.Edge limits: measures distances and angles between endpoints or midpoints of edges. Endpoints onare proposed on curved surfaces.Arc center: measures distances and angles between the centers of arcs.Coordinate: measures distances and angles between coordinates entered for target and/or referenceitems.

4. Click to select a surface, edge orvertex, or an entire product (referenceitem).

Note: The appearance of the cursor haschanged to reflect the measurecommand you are in. A number (1 for thereference item and 2 for the target item)also helps you identify where you are inyour measure.

Dynamic highlighting as you move your cursor over surfaces, faces and vertices helps you locate thereference and target items.

5. Click to select another surface, edge or vertex, or an entire product (target item).

A line representing the minimum distance vector is drawn between the selected items in the geometry areaAppropriate distance values are displayed in the dialog box.


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The overall minimum distance as well as distance vector components between the selected items and x,y,zcoordinates of points between which the minimum distance was measured are given in the MeasureBetween dialog box.

In design mode and wherever possible, true values are given. Approximate values are identified by a ~ sign

The number of decimal places is controlled by the DMU Navigator tab in the Options dialog box (Tools ->

Options).

6. If necessary, adjust the presentation of the measure:

You can move the lines and text of the measure (see figures below).

7. Select another reference item.

8. Set the Measure type to Fan to fix thereference item selection so that you canalways measure from this item.

9. Select the target item.

10. Select another target item.


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Customizing Your Measure:You can, at any time, customize thedisplay of the results in both thegeometry area and the dialog box. To doso, click Customize... in the Measure

Between dialog box and set your displayin the Measure Between Customizationdialog box. By default, all results aredisplayed.

11. Click Close when done.


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Measuring Properties

Restrictions:

cgr files do not permit selection of individual vertices, edges or surfaces.Visualization Mode does not permit selection of individual vertices, edges or surfaces. To select thesgeometrical entities, switch to Design Mode (Edit -> Design Mode).

This task explains how to measure the properties associated to a selected item (points, edges, surfaces andentire products).


1. Switch to Design Mode (Edit -> Design Mode).

2. Set View -> Render Style to Shading with Edges.

Note: You cannot use this command, if Shading only is selected.

3. Click the Measure Item icon in the DMU Space Analysis toolbar or select Analyze -> Measure Itemfrom the menu bar:

The Measure Item dialog box and the Measure Tools toolbar appear:


Measure Keep : lets you keep the current and subsequent measures as features. This is

particularly useful if you want to keep the measures as annotations for example. Double-clicking anexisting measure lets you re-edit the presentation of the measure, review information in the dialog boor delete measures.


Exit Measure : lets you exit the measure. This is useful when the dialog box is hidden.

4. Click to select the desired item.

Note: The appearance of the cursor has changed to reflect the measure command you are in.

The dialog box is updated.


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The dialog box gives information about the selected item, in our case a surface. The center of gravity of thesurface is visualized by a point. In the case of non planar surfaces, the center of gravity is attached to thesurface over the minimum distance.

In design mode and wherever possible, true values are given. Approximate values are identified by a ~ sign

5. Click Customize... in the Measure Item dialog box to see the properties the system detects for the varioustypes of item you can select.

Customizing Your Measure:You can, at any time, customize thedisplay of the results in both thegeometry area and the dialog box. To doso, click Customize... in the MeasureItem dialog box and set your display inthe Measure Item Customization dialogbox. By default, all results are displayed.


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6. Try selecting other items to measureassociated properties.

The system detects whether the edge isa line, curve or arc, taking modelaccuracy into account. If a line or curveis detected, the dialog box indicates the

length as well as X, Y, Z coordinates ofthe start and end points. If an arc isdetected, the dialog box also indicatesthe arc angle, radius or diameter and theX, Y, Z coordinates of the center point.

7. If necessary, adjust the presentation of the measure:You can move the lines and text of the measure.

The number of decimal places is controlled by the DMU Navigator tab in the Options dialog box (Tools ->

Options).



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Measuring Arc Sections

This task explains how to measure the length, radius and angle of an arc drawn through threepoints.


1. Click the Arc through Three Points icon in the DMU Space Analysis toolbar or selectAnalyze -> Arc through Three Points from the menu bar:

The Measure Arc Section dialog box and the Measure Tools toolbar appear.


Measure Keep : lets you keep the current and subsequent measures as features.This is particularly useful if you want to keep the measures as annotations for example.

Double-clicking an existing measure lets you re-edit the presentation of the measure,review information in the dialog box or delete measures.


Exit Measure : lets you exit the measure. This is useful when the dialog box is hidden

2. Select three points along a curveor an arc.

Note: The appearance of thecursor has changed to reflect themeasure command that you are in.A number (1, 2 then 3) also helpsyou identify where you are in yourmeasure.

Dynamic highlighting as you move the cursor over geometrical entities helpsyou locate points. As you move over edges, the edge (and not the surface) is highlighted.


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An arc is fitted through the threeselected points and is displayed alongwith its center point.

The arc length, angle and radius arealso visualized.

The dialog box is updated and now gives the length, angle and radius or diameter of the arc aswell as start, end and center point coordinates.

In design mode and wherever possible, true values are given. Approximate values are identifiedby a ~ sign.

The number of decimal places is controlled by the DMU Navigator tab in the Options dialog box

(Tools -> Options).

3. If necessary, adjust the presentation of the measure:

You can move the lines and text of the measure (see figure above).


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Customizing Your Measure:You can, at any time, customizethe display of the results in both thegeometry area and the dialog box.To do so, click Customize... in theMeasure Arc Section dialog boxand set your display in the

Measure Arc SectionCustomization dialog box. Bydefault, all results are displayed.



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Workbench Description

The DMU Space Analysis Version 5 application window looks like this:

Click the hotspots to see related documentation.

DMU Space Analysis Menu Bar

DMU Space Analysis Toolbar


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DMU Space Analysis Menu Bar

This section presents the menu bar tools and commands dedicatedto DMU Space Analysis.mstheme-->

Start File Edit View Insert Tools Windows Analyze Help

Insert

For... See...

Clash Basic

Interference

Analysis and

Detailed

Interference

Analysis

Sectioning Sectioning

Distance Calculating

Distancesbetween

Products

3D Annotation

Using the 3D

Marker in the

DMUNavigator'sUser Guide

Group

DefiningGroups of

Products in the

DMUNavigator'sUser Guide
http://h%7C/BSF/Doc/online/dmnug/dmnugbt0301.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0301.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0103.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0103.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0103.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0103.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0103.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0103.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0301.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0301.htm


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Tools

For... See...

Options... Customizing DMU

Navigator Settings

Customizing DMU

Sectioning Settings

Customizing DMU Clash

Settings

Analyze

For... See...

MeasureBetween

Measuring

Minimum

Distances &Angles

between

Geometrical

Entities or

Points

MeasureItem

Measuring

Properties

Arc throughThree Points

Measuring ArcSections.

Part to PartClash

Analyzing Part

to Part Clashes

GraphicMessages

Using the

Section Viewer


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CurrentSelection

Viewing the

Current

Selection in the

DMU NavigatorUser's Guide
http://h%7C/BSF/Doc/online/dmnug/dmnugbt0104.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0104.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0104.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0104.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0104.htmhttp://h%7C/BSF/Doc/online/dmnug/dmnugbt0104.htm


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DMU Space Analysis Toolbar

See Analyzing Interferences

See Sectioning

See Calculating Distances between Products

See Comparing Products

See Measuring Minimum Distances & Angles between Geometrical Entities or

Points.

See Measuring Properties

See Measuring Arc Sections .

See Using the 3D Marker in the DMU Navigator User's Guide


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Customizing Settings

Before you start your first working session, you can customize the way you work to suityour habits. This is done using Tools -> Options, Product page from the menu bar.

This type of customization is stored in permanent setting files. Settings will not be lost if

you exit your session.Task Purpose

Customize the number of decimal places after thedecimal point as well as the display of previewwindows

Customize the section plane origin and normalvector orientation, section grid and results windowsettings

Customize clash information retrieval options,results window and results box display settings,

computation type and detailed computation mode


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Customizing DMU Navigator Settings

This task explains how to customize DMU Navigator settings.

1. Select Tools -> Options from the menu bar:

The Options dialog box appears

2. Click Product in the left-hand box

3. Click the DMU Navigator tab

The DMU Navigator tab lets you customize:

Measurement display: number of decimal places after the decimal point for length, angle, area and volumemeasurementsAutomatic display of preview windows

4. To set the default measurement display, enter the number of decimal places you want to see displayed after thedecimal point; for example for length measurements, enter 4 to display 20.4235

5. Repeat the above for angle, area and volume measurements

6. Click preview checkboxes as appropriate to change the automatic display setting of preview windows duringinterference analyses, distance measurements and sectioning, etc.

By default, preview windows are automatically displayed.

7. Click OK in the dialog box when done


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Customizing DMU Sectioning Settings

This task explains how to customize sectioning settings.




3. Click the DMU Sectioning tab

The DMU Sectioning tab lets you customize:

Section plane settingsSection grid settingsDisplay of the results window

4. Set default section plane settings:Normal X,Y,Z: specifies the absolute axis along which you want to orient the normal vector of the section plan(master plane in the case of slices and boxes)Origin: locates the center of the plane at absolute coordinates 0,0,0 or at the center of the bounding spherearound the products in the selection you defined

5. Set default grid options:

Absolute mode: sets grid coordinates with respect to the absolute axis system of the documentRelative mode: places the center of the grid on the center of the section plane (master plane in the case ofslices and boxes)Style: sets the grid representation to lines or crossesAutomatic filtering: if clicked, automatically adjusts the level of detail of the grid display when you zoom in andout

Steps: specifies the spacing between grid lines. The default value is 100. Units are current units set usingTools -> Options.

6. Click results window checkboxes as desired to:

Automatically display a results windowAlways display the 2D view in the results window



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Customizing DMU Clash Settings

This task explains how to customize the clash settings of the Clash command.




3. Click the DMU Clash tab

The DMU Clash tab lets you customize:

Information retrieval for comparison purposes

Display of the results windowDisplay in the results box

Default computation type and clearance valueDetailed computation mode


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4. Click one of the retrieve information options to compare current clash results with

Previous clash computation resultsResults stored in VPMNo comparison (default setting)

5. Click the Automatically open checkbox to display a results window automatically

6. Set the default display in the Results box of the Check Clash dialog box:

Click List by conflict or List by product to display List by Conflict or List byProduct tabs as desired. By default, the List by conflict tab is displayed.By default, the first line is automatically selected in the List by Conflict or Listby Product tab. Click the First line automatically selected checkbox tode-activate this option.

7. Set the default computation type in the drop-down list and, if necessary, thedefault clearance value

8. Set the detailed computation mode to:

Triangles, curves and penetration depth or minimum distance

Curves and penetration depth or minimum distancePenetration depth or minimum distanceNo detailed computation

The detailed computation mode defines what is computed when you select aconflict or product in the Results box. Element analysis in Detailed Results andVisualization boxes is only available if you select one of the first two options.

Note: The graphics display and storage of the triangular representation is costly andmay adversely affect performance.



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Glossary

Bbetween allcomponents

A computation type whereby each product in the document is testedagainst all other products.

between twoselections

A computation type whereby each product in the first selection istested against all products in the second selection.

Cclash An interference type where a conflict is detected if two elements

occupy the same space zone.

clearanceinterference

An interference type where a conflict is detected if two elements areseparated by less than a pre-defined distance. Also termed clearance

violation or near miss.component A last level entity in the product structure.

contactinterference

An interference type where a conflict is detected if two elements are incontact.

Ddirection ofextraction

The direction along which a product must be moved in order to avoid aclash. Visualized as an arrow.

DMU Digital Mockup

distancealong x,y,z

Eelement A geometrical sub-set.

Ggroup ofproducts A set of products defined explicitly using the Group icon in the

DMU Management toolbar or Insert -> Group... in the menu bar. Apersistent entity that can be stored in the document.


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Iinside oneselection

A computation type whereby, within any one selection, each product ofthe selection is tested against all other products in the same selection.

interference A space conflict. Different types can be detected: clash, contact and

clearance.

intersectioncurve

Line segments identifying clash conflicts between products.

Mminimumdistance

The distance between the two closest points of two productrepresentations.

Ppenetration

depth

The minimum distance by which it is necessary to translate a product

to avoid a clash.product In DMU workbenches, a subset or constituent part of a CATProduct

document, for example a cgr file or V4 model.

Ssection A set of segments identifying the cross-sectional boundary produced

by the intersection of a section plane and a selection of products.Sections are 2D views that help the user manage 3D documents.

section cut The result of sectioning a product and cutting away the material from

the cutting plane, beyond the slice or outside the box.section plane A cutting plane used to create sections and section cuts. The plane

has limits and can be manipulated.This is the master plane whencreating section slices and boxes.

selectionagainst all

A computation type whereby each product is tested against all otherproducts in the document.


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Index

A

analyzing

basic interference analysis

clashes, contacts and clearances

detailed interference analysis

part to part clashes

Arc through Three Points command

arc sections

measuring

B

basic interference analysis

between all components

between two selections

Cchanging

section plane position

Clash command ,

clashes

color coding ,

defining

clearancescolor coding

defining

color coding

interferences

commands

Arc through Three Points
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Clash , ,

Compare Products

Distance ,

Edit Grid

Edit Position

Grid

Flip Horizontal

Flip Vertical

Group , , ,

Lock 2D

Measure Between ,

Measure Item

Options...

ReframeResults Window

Rotate Left

Rotate Right

Section Box

Section Slice

Sectioning , , ,

Compare Products command

comparing

products

results window

contacts

color coding

defining

creating

groups , , ,

section boxes

section cuts

section planes

section slices

customizing

DMU Clash settings

DMU Navigator settings
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DMU Sectioning settings

measurement display

preview windows

D

defining

between all components

between two selections

clash

clearance

contact

direction of extraction

distance along x,y,zDMU

group of products

inside one selection

interference

interference types

intersection curve

minimum distance

penetration depth

section

section cut

section plane

selection against all

detailed interference analysis

detecting

clashes, contacts & clearancespart to part clashes

direction of extraction

distance along x,y,z

Distance command ,

distances

measuring along specified direction

measuring between geometrical entities & points
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measuring between products

results window

DMU

DMU Space Analysis toolbar

GGroup command , , ,

group of products

groups

creating , , ,

I

inside one selection

interference

interferences

basic analysis

clashes

clearances

color coding

contacts

detailed analysis

detailed computation mode

types ,

intersection curves

M

manipulating

section planes ,

Measure Between command ,

Measure Item command

measuring

length, radius & angle of 3-point arc
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minimum distance along specified direction

distance & angle between geometrical entites & points

minimum distance between products

properties

minimum distance

moving

section planes ,

O

Options command

P

part to part clashes

penetration depth

positioning

section planes ,

preview window

clash ,

distance

sectioning

products

comparing

properties

measuring

R

re-dimensioning

section planes ,

results windows

clash

comparison

distance
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section

visualization filters for clash

rotating

section planes ,

Ssection , ,

section boxes

section cut

section cuts

section plane

section planes

changing current positioncreating

manipulating ,

moving ,

positioning on defined target

re-dimensioning ,

rotating ,

section slices

sectioning , , , ,

results window

2D grid in results window ,

adjusting grid parameters in results window

Sectioning command

selection against all

settings

DMU ClashDMU Navigator

DMU Sectioning
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V

visualization filters

Documents

Dmu Space Analysis