CAE CAD Manipulation

8/9/2019 CAE CAD Manipulation

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Jaguar and Land Rover C3PNG

TrainingC3P-NG P2.0, CATIA V5R18

Copyright 2010, Jaguar Land Rover – Proprietary and Confidential. All rights

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Title Page

C3PNG

Catia V5

for

CAECAD Manipulation

C3P NG P2

CATIA V5 Release 18 July 2011

Version: 1.0


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About the Course

Course Duration

This module is 1.5 day in duration.

Course Objectives

n To understand the fundamentals of Catia V5

n To understand how to manipulate and modify native V5 data for CAE usage

n To understand how Teamcenter is used within Jaguar Land Rover

Pre-Requisites

n Basic Teamcenter skills


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About the Course

Course Material

This document is based on JLR methods available MADCAP

This document and its contents are proprietary legally protected and comprise legallyprotected subject matter belonging to the Jaguar Land Rover. It is loaned on the basis of a

confidential relationship. All use, its reproduction, and disclosure are strictly controlled andprohibited without the prior written consent of the Jaguar Land Rover


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Change History

IssueNo Author Date Comments

1.0 M Pugh July 2011 Initial Release


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Course Contents

Unit 1: Introduction to Catia V5

Catia V5 OverviewLoading Catia V5

User Interface

Workbench Concepts

Managing Files

Model Navigation

Model Visualisation

Unit 2: Load Data

Teamcenter Integration

Data directory

Alternative file types

Translating data into V5

Unit 3: Saving Data

Saving to Data directory

Exporting CAD geometry

Unit 4: Part Interrogation

Tree structure

Axis System

Part bodies

Geometrical sets

Sketches

Boolean Operations

Unit 5: DMU

MeasuringMaterials

Cross section

Image Capture

Exercise –

Unit 6: Geometry Manipulations

Deactivating Features

Modifying Features

Creating an Orphan Part

Change Part Body


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Jaguar and Land Rover C3PNGTrainingC3P-NG P2.0, CATIA V5R18


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Introduction to Catia V5

Objectives

n Catia V5 Overview

n Loading Catia V5

n User Interface

n Model Navigation

n Workbench Concepts

n Managing Files


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CATIA, which stands for Computer Aided Three-Dimensional Interactive Application, was developed

in the early 1970’s by Dassault Systems of France. It is widely used within Automotive, Aerospaceand the Consumer Products industries.

Shown below is a list of some of its capabilities:

n Part Design

n Assembly Design

n Surface and Shape Design

n Generative Drafting

n Digital Mock-Up Analysis

n Sheet Metal Design

n Kinematics or Fitting simulation

n Data Translation (IGES, STEP)

n Rapid Prototyping

n Component / Assembly meshing

n FE Analysis

n Much More................!

The areas in Italics will make up the focus of this training



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Loading Catia V5

CATIA Version 5 operates on both Windows and Unix workstations. It can be used as standalone or

with Teamcenter.

To start CATIA Version 5 on Windows workstation there are 3 choices:

Start – All Programs – CATIA

Double clicking with the left mouse button on the CATIA shortcut icon

Double clicking with the left mouse button on an existing CATIA document

The CATIA main screen will then appear. Teamcenter can be started in the same way



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Loading Catia V5

To start V5 on a Unix workstation use the following steps:

1. Login to the Unix workstation

2. On a blank area of the desktop click the Mouse Button Three (MB3)

3. Select CAD – C3P NG – Production (select Training for the training course)

4. Select MyV5 and Tce from the Environment starter form and OK from the Confidentiality form



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The CATIA screen is divided into several main areas :

A. Menu Commands

B. Working Area

C. Workbench Toolbar

D. View Toolbar

E. Standard Toolbar

F. Filename of open document

G. Specification TreeH. Compass

I. Dialogue Area

A

F

G

E D

C

B

G

I

User Interface


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The display of the geometry on the screen can be managed

using the following options

n The Mouse Buttons

n The Compass

n The View toolbar

Left Mouse Button (LMB)

Used for selecting, it can be used to pick geometry directly from

the screen or commands via the

workbench icons

Middle Mouse Button (MMB) or Wheel

Used during Panning, Zooming or Rotating operations

Right Mouse Button (RMB)

Used to activate the Contextual Menus

Model Navigation


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Zooming can be achieved by four methods:

n Hold down the MMB and then click either LMB or RMB once, continue to hold down the MMB andthen move the mouse up to zoom or down to zoom out

n Hold down MMB and then press the CTRL key once, continue to hold down the MMB and then

move the mouse up or down

n Select one of the Zoom commands from the View toolbar:

n Select VIEW > MAGNIFIER. This displays a window that magnifies a certain area of the screenrepresented by a square. The square can be dragged and resided as needed.

Model Navigation


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Panning can be achieved by three methods:

n Hold down the MMB and move the mouse. The camera moves across the plane of the screen

n Select the Pan command from the View toolbar, hold down LMB and move the mouse

n Place the mouse over an edge or plane of the compass hold down LMB and the camera willeither move along the selected edge or over the selected plane

n Hold down the CTRL key and then use the arrow keys

Model Navigation

Compass Edge

Compass Plane


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Rotating can be achieved by five different methods:

n Hold down the MMB and then hold down either LMB or RMB. Hold down both buttons and thenmove the mouse

n Hold down MMB and then hold down the CTRL key continue to hold down both buttons and then

move the mouse.

n Select the Rotate command from the View toolbar, hold down LMB and move the mouse

n Place cursor over the compass point hold down the LMB and

move the mouse

n Hold down the Shift key and then use the arrow keys

Model Navigation


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Any point or feature on the geometry can be centred by clicking MMB on that area of the geometry.This also moves the centre of rotation

You can also use the Fit All In icon to ensure that all visible geometry is displayed on the screen.

Model Navigation

MMB this area to Centre

Resulting in:


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There are default views such asIsometric, Front View, etc.

User defined views may be created.

To create a user defined view, set theimage into the desired orientation

and then select the option Add.

Views can be deleted or modified

Changes to standard views can be madeunder properties

Model Navigation


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Rendering styles specify how partsare visualised

Model Navigation

You can have a Customised the

display. This is very useful when itcomes to working with meshes


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Any Geometry can be hidden from the main

view of the document. Geometry that ishidden is placed in the Non-Visible space.

Hiding and Showing can be accomplished using the Hide/Show icon or by using the contextual menu

accessed using the RMB

To switch between Visible and Non-Visible space use the Icon

Visible Space Non Visible space

Model Navigation


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To hide and show geometry of the same type (points, lines, planes, sketches etc) use the pull downmenu under Tools

Hidden objects on the tree will have their symbols ghosted

Model Navigation

Note: if an individual Body or

Geometrical set is hidden all ofthe objects within

it will be hidden


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CATIA assigns different workbenches to work with different functionality.

Each workbench contains only the tools that are relevant to the current activity.

Some of the common workbenches are:

Part Design To design parts using Solid Modelling techniques

Generative Shape Design To deign parts using Surface Modelling techniques

Assembly Design To assemble multiple parts in positional context

Generative structural analysis To perform FE analysis on parts and / or assemblies

Advanced Mashing Tool For performing and analysing FE Mesh

Healing Assistant To repair and modify problem surfaces

Workbench Concepts


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Workbenches can be accessed by a number of different methods:

n Select the Start command

n Right Mouse Button (RMB) over the workbench icon

n Left Mouse Button (LMB) over the workbench icon

n Use the Workbenches toolbar

Workbench Concepts

Note: the workbenches have to beconfigured as Favourites in

Tools - Customize


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Each workbench contains a number of toolbars. visibility of these toolbars can be controlled usingthe command View – Toolbars.

Any toolbar with a tick against will display.

A toolbar can be relocated by selecting

and dragging its separator.

A tool bar can be “Floating” or “docked”

into a fixed location

Workbench Concepts

Note: Any icon displayed with a smallblack triangle beneath itdenotes that there are

additional commandscontained within a ‘Fly Out’

toolbar

Docked

Floating


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CATIA has several different file types, some of the most common ones are shown below:

CATPart Used for PARTS

CATProduct Used for ASSAMBLY

CATDrawing Used for 2D DWAWINGS

CATAnalysis Used for All ANALYSIS including Meshing

Model Used in V4

For a new, Part, Assembly or Drawing etc select the option File – New and then choose the type of

CATIA entity required.

Managing Files

Note: Note that for new Parts, JLR recommend that the part is created

and loaded from Teamcenter


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Loading Data

Objectives

n Teamcenter Integration

n Data directory

n Alternative file types

n Translating data into V5


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Loading Data

Teamcenter Integration connects CATIA and Teamcenter through hooks in both applications and isrequired for both applications to communicate with one another.

Within CATIA there is a Teamcenter Integration toolbar.

Within Teamcenter there are Teamcenter Integration menus.

It is very important to use the Teamcenter Integration commands when moving between the twoapplications.

CATIA V5 and Teamcenter do not communicate directly with each other. Teamcenter sends files to alocal staging area where they are retrieved by CATIA.


Teamcenter

M E N U

T

O O L B A R

CATIA V5

Local StagingArea

Note: The local staging area is a temporary directory created atthe launch of CATIA V5 and Teamcenter. When theapplications are closed, the local staging area is cleared.However it is good practice to purge the staging area

manually from time to time using the Purge command

The staging area is located in: /ngx/.catiman/catuii


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Loading Data

The Teamcenter Integration Toolbar is usually located along the left side of the CATIA window.These icons should always be used to move between CATIA and Teamcenter as this guarantees anactive connection between the two applications through which CATIA and Teamcenter synchronise

information


Note: If the Teamcenter Integration Toolbar is not visible it mayneed to be activated from CATIA.Use VIEW - TOOLBARS - TEAMCENTER INTEGRATION

to switch on the toolbar


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Loading Data


Load Data

The Load Data icon forces CATIA to look in the local staging area for CATIAdocuments (eg CATParts/CATDrawings/CATProducts). The Load Datacommand is initiated in conjunction with one of the Teamcenter menu options

for sending data to CATIA V5.

The Save All is used for saving data. This icon accesses the TeamcenterSave Manager panel. It is also used for creating new revisions and has check

out / check in options

The Check In icon is used to check in selected items in CATIA into

Teamcenter. If a part or drawing is selected the dataset is checked in, if a

product is selected the the dataset and BOM view revision are checked in.

If the data is released or already checked out by a concurrent user, a warning

message appears indicating no write access to check in the data

The Check Out icon is used to check out selected items in CATIA fromTeamcenter. If a CATPart or CATDrawing is selected, the dataset is checked

out. If a CATProduct is selected, the dataset and BOM view revision are checkedout.

If the data is already released or checked out by a concurrent user, a warning

message appears indicating no write access to check out data

Save All

Check Out

Check In

Note: Multiple selections are supported for Check In and CheckOut

Launch / Return to Teamcenter

The Launch / Return to Teamcenter icon is used to launch Teamcenterfrom CATIA V5 or to return to the Teamcenter application from CATIA V5.


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Loading Data


The Check Out Status icon is used for checking the status of selected

items – a list of checked out items is created

Check Out Status

Purge Staging Area

The Purge Staging Area icon is used to delete all files from the localstaging area. When the file is closed in CATIA V5, it should also be cleared

from the staging area. However, it is sometimes necessary to purge thedirectory manually.

Item Status

The Item Status icon is used to display useful information from Teamcenter

items in the active CATIA session. The status window displays informationsuch as dataset or BVR checked out, checked out by user ID, and release

status. The Item Status command is run against selected items in thespecification tree.

Note: The Update button refreshes or updates the statusinformation listed in the Status window


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Loading Data


Load in CATIA V5

Use Load in CATIA V5 to send selected items to CATIA V5. The Load command must be initiatedin CATIA. Multiple selections are not supported.

Load for Compare in CATIA V5

Use Load for Compare in CATIA V5 toload multiple revisions of the same CATPart

or CATProduct into one CATIA session tocompare. The compare file is renamed byadding a prefix (REF to

avoid naming conflicts in CATIA.

Note: Document links may appear broken in assemblies loaded using this function

as the file names are changed during loading

Return to CATIA

Use Return to CATIA to return from Teamcenter to the CATIA V5 session. If a Load command wasselected from the Teamcenter Integration toolbar in CATIA V5, the user can select Return to CATIA to

cancel the load command.

The Teamcenter Integration Menu has different options when used from the My Teamcenter tab(below) and the PSE tab (not shown). However, the options shown below are common to both.


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Loading Data


Note: Once Teamcenter has been launched, the Launch /Return to Teamcenter icon is used as a command to

move from CATIA V5 back to Teamcenter

After launching Teamcenter from CATIA V5, login as normal using your Teamcenter login and

password (when launching from CATIA V5, there is no need to launch My Teamcenter).

Teamcenter can be launched independently or from within CATIA V5. Launching Teamcenterindependently was covered in the unit Getting Started. To launch Teamcenter from CATIA V5use the Launch / Return to Teamcenter icon.


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Loading Data


Procedure for Loading Existing CATParts into V5 from Teamcenter

1. Select the Load Data icon from the Teamcenter Integration Toolbar in CATIA V5

2. If necessary, search for the required item in Teamcenter. Select the item in MyTeamcenter.

3. Select the CATIA V5 - Load in CATIA V5 from the My Teamcenter window. Thecorresponding data is loaded into CATIA V5.

Note: If a particular item revision is selected in Teamcenter, that revision is loadedinto CATIA. If the item is selected, the latest revision will be loaded.


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Loading Data

If loading parts from Teamcenter it is necessary to use the PSE (Product Structure Editor)application.

The Product Structure Editor (PSE) is used to create, view and modify a product structure, its

associated data and to configure revisions and variants. The PSE displays the structure in anindented Bill of Materials (BOM) format.

In practice, a user can search for an item or item revision and open it into My Teamcenter. The item

can then be opened into PSE using the various options. Items can also be sent from PSE back intoTeamcenter or opened into CATIA V5

To insure a Part or Assembly is loaded into V5 in carline position. It needs to be loaded from a PSE

session containing a F_DesignSolution (DS)

1.Select the Load Data icon from the Teamcenter Integration Toolbar in CATIA V5

2.Select the item(s) required from the PSE window.

3.Select the CATIA V5 - Load in CATIA V5 from the PSE window. The corresponding data is loadedinto CATIA V5.

If there is no intention to save the items back to Teamcenter you can use

CATIA V5 - Load for Consulting from the PSE window.


Procedure for Loading parts and / or assemblies into carline position


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Loading Data

n To open and existing file into CATIA select File – Open

n From the window that displays select the option Show Preview

n Select the required file

CATIA will open the selected file and activate an appropriate Workbench

Alternatively select the Open icon from the Standard Toolbar

Opening from a file based environment


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Loading Data

It is possible to open a variety of file types within Catia V5. These can be opened in the normal way,however the structure and functionality of the converted geometry will vary depending on the file type.

Some common examples are shown here. The functionality will be discussed later in the Tree

structure section.

Catia V5 data

Converted Iges file

Converted Step File

V4 data viewed in V5

Alternative file types


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Loading Data

This shows how to copy V4 geometry to V5. Geometry changes can then be made to the modelwithin V5.

1.Load the V4 model into V5. This can be done from a data directory or through Teamcenter using

the Teamcenter integration toolbar. The model will have tabs for *MASTER and *DRAFT and perhapssome detail workspaces

2. With this model displayed, open a new part document and enter a name for the V5 part. For thesake of convenience, it is recommended that you use the name the part had in V4. The part willdisplay in the specifications tree.

3. Expand the specification tree until you see the part body entry (e.g., PartBody, Open body, Layout,etc.). Double click on it to make it active

4. Click Window - Tile, horizontal or vertical to display both documents

5.To copy geometry from a detail workspace,

select the tab for that workspace. You canselect the geometry individually, or with a trap box.

Click Edit – Copy



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Loading Data

6. In the V5 part document, expand the specifications tree until you find the part body entry (e.g.,

PartBody, Layout, etc.). Double click on it to make it active. Paste the geometry to this partbody. If you get a Paste error, you have lost your geometry and you need to go back to the V4

model and carefully Edit - Copy again, then go to the V5 document and paste it into the part body.(Some types of geometry, such as solids, may automatically create a new part body or save a

new document.)

7. Review the copied geometry and make sure it is what you want. You may want to hide some of

the features. Save the part as a V5 CATPART



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Loading Data

A CAD2CAD request is for converting IDEAS mastered parts to CATIA V5.

This outlines the steps required to request a CAD2CAD translation in C3PNG.

For all CAD2CAD requests please visit the ‘J&LR CAD Translation Services Hub’ which can be

found by following the link given in CADSUP

All CAD2CAD requests will need authorising before translation takes place. You WILL be asked whyyou need this translated.

In many cases a CAD2CAD is not required as all the information needed can be obtained from the JTfile



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Saving Data

Objectives

n Saving to Data directory

n Exporting CAD geometry


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Saving Data

To Save a model chose File – Save. The first time a file is saved the system defaults to using theoption Save As which allows you to choose the directory, file type and file name required

The command File – Save on an existing file will overwrite the file

To save and existing file either with a new name, directory location or file type use the option File –Save As

Alternatively select the Save icon from the Standard Toolbar

Saving to Data directory

Note: The command File-Save As will

change the filename but not the name onthe specification tree, this could cause

problems later particularly when workingwith assemblies.

It is generally recommended that thename on the tree corresponds to thefilename

Note: The save icon on the TeamcenterIntegration toolbar allows saving to

TeamCenter and NOT to any filebased location.


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Saving Data

If an alternative format is required, this can be selected from the Save as type list when saving in thenormal way.

Exporting CAD geometry

Note: It is also possible to export a STEP file

from PSE in Teamcenter.


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Part Interrogation

Objectives

n Overview

n Tree structure

n Axis System

n Part bodies

n Geometrical sets

n Sketches

n Boolean Operations


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Part Interrogation

CATIA V5 has a tree which keeps a hierarchy of all the Features, Sketches and Constraints within themodel.

The tree provides a record of the features and the their order of creation for the solid model.

It is possible to edit, remove or reorder

these steps in order to create a modified

Part without having to recreate the feature.

Features can also be temporarily suppressed so

that they are not considered as part of the model

Specification Tree. The model is rebuilt to reflect this.

Part specification trees will contain Bodies for Solid

Features and Geometrical Sets for Surface Features

and 3D wireframe data.

Sketches are located inside either bodies or

alternatively geometrical sets.

Other items that will appear on the tree will be

measures, surface analyses, etc Here a Publication

of the final part is shown

Tree structure


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Part Interrogation

Objects can be selected from the Specification Tree or from the screen. Selecting from the tree andthe screen does not necessarily result in the same selection being made.

Selecting a face from the screen highlights the owning feature on the tree however using this method

only one face of the feature will be selected. This will be shown in the dialogue area

Selecting an object directly from the tree ensures that the complete entity has been selected againthis will be shown in the dialogue area

Tree structure


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Part Interrogation

All parts in CATIA will have a global coordinate system represented by three planes. In some cases,the model may also have another system (local cs) from which you can reference objects.

Global Coordinate System (gcs): The absolute cs of the car. When parts are exported from CATIA

(IGES, STEP, etc) the element and part transformations are from the global coordinate system.

Global Coordinate System

Local Coordinate System (lgc): During the design process, many times it is easier to use a local

temporary axis system to position elements and parts than it is to design the part on global 0,0,0 (cs)and then move the part into position.

Local Coordinate System

Axis System

Axis

Plane

Origin

Plane


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Part Interrogation

The PART Body is a combination of one or more features created in the Part Design Workbench

FEATURES are components in the part which are

either based on sketches (sketch-based) or on existing

features (dress-up and transformation).

Features can also be generated from surfaces.

The combination of features will determine the shape of the part.

Features can be combined with unions, subtractions, intersections

Part bodies

PART Body


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Part Interrogation

Once a feature has been created it can be modified. This applies to Reference elements, sketches,sketch based features or dress up features.

Modification can be achieved using two methods

Method 1 – Double click the feature either from the specification tree or the graphics screen. Clickingon the sketch will modify the sketch that drives the feature, clicking on the feature its self will modifythe features properties.

Method 2 – RMB over the feature either from the specification tree or the graphics screen

From the contextual menu select the object and then either Edit or Definition

Part bodies

Double click to modify

RMB


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Part Interrogation

A Geometrical Set is the container of wireframe (points, lines and planes) and surface geometry. It ispossible to modify geometry in the geometrical sets in a similar way to that shown for the part body.

Example of Geometrical set usage

If any wireframe or surface geometry is created within a part that has no geometrical set CATIA willcreate one automatically

To create a new Geometrical Set use Insert – Geometrical Set

The data within a Geometrical Set is not ordered

The Geometrical Set which is defined as the In Work Object (Underlined) will

be the container of any additional wireframe or surface geometry

Geometrical sets

In Work Object


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Part Interrogation

A Sketcher workbench enables the creation and editing of 2D wireframe profiles which is necessarywhen creating or editing many of the solid features found in the Part Design workbench.

Sketches can comprise of two types of geometry:

Standard elements which are visible outside of the Sketcher workbench is the geometry used tocreate the solid 3D feature

Construction elements which are only visible within the Sketcher workbench and are used to control

the shape or size of the sketch but are not used in the creation of the 3D solid feature

The basic process for sketch creation will have been :

n Create a sketch on the plane / location required

n Create the 2D wireframe geometry

n Constrain the geometry (including dimensions if required)

n Create a feature using the sketch geometry

Any of these aspects can then be changed to modify the model. These changes must be made in the

sketcher workbench which is entered automatically.

Sketches

RMB

Double click to modify


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Part Interrogation

When a CATIA part is created it contains one body known as the Part Body. However, a singleCATIA part can contain multiple bodies where each body could be considered to be a separate solid.

The Part Body cannot be deleted but any new body added to the part may be deleted any time.

Multiple bodies are often created for complex parts when it may be easier to model individual piecesand then use Boolean Operations to integrate the individual bodies into a single solid.

An example when this could be used is when the core of a cast part is finished machined by removingmaterial a additional body.

Boolean Operations

Material removed


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DMU

Objectives

n Measuring

n Materials

n Inertia

n Clash analysis

n Image Capture


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DMU

Physical Properties and measurement calculations may be required for CAE analysis. Measurementcalculations will be used to examine and identify the small surfaces, features (bolt holes, fillet areas),and wall thickness, which may require extra attention.

For example, the fillet or chamfer that is smaller than the recommended element size can beidentified and will then be deactivated. Also, ICE and CFD Analysts may need to cut a cross section

on a core to measure the cross section area or the length of the flow path of a manifold, etc.

The Measure command gives three types of measurement:

Measure Between – Measures the distance, angle, etc between the selected elements

Measure Item – Measures the selected element

Measure Inertia – Calculates information such as mass and centre of gravity

Step by Step to Perform Measure Between

n Select the MEASURE BETWEEN icon from the Measure toolbar.

n Based on the entity to be selected, use Selection 1 and 2 Mode from the pull down menu to changethe selection options to point, edge, etc., as a selection filter.

Measuring

Measure Between

Measure Item

Measure Inertia


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DMU

n Select the entities to measure. Note: If desired, toggle on the check box for Keep Measure toinclude the Measurement in the Specification Tree. Double-click on the Measurement to bring themeasurement window back.

n Look at the Results column for the measurement results.

n Select the Customise button to include more detail calculations.

n Minimum Distance: Used to measure the minimum distance between selected entities.

n Maximum Distance: Used to measure the maximum distance between selected entities.

Step by Step to Perform Measure Item

n Select the Measure item icon from the Measure toolbar.

n Select the Customise button. The Measure Item Customization window displays.

n Toggle on the desired calculations.

n Select the entity from the Specification Tree to measure. Notice that the results display.

Measuring


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DMU

Depending on the design process in design, sometimes the Analyst will need to assign the materialproperties to a part. Make sure it is applied to the final part body or the body which will be used toperform the analysis.

Step by Step to Assigning Material Properties

n Select the Part Body from the Specification Tree.

n Select the apply material icon

n Select the open a material library folder icon

n Navigate to the required material from the File Selection window.

n Double-click on a material. The Properties window displays.

n Select the Analysis tab for materials properties information. Select OK.

n Select Update All for an update.n Shade the part with the Material option selected to see the material displayed

When the part is out of date, there will be a swirl symbol on the Specification Tree. Also the updateall icon is activated. Make sure to update the part if it is out of date

Materials

Out of date Update all

Apply Material icon

Material is

applied tomasterPart Body

for FEAnalysis

Analysis Tab

for relevantmaterial

Properties


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DMU

For Durability, NVH, and Dynamics, the inertial calculations will be used as part of the analysis. Makesure the final part body (forging, cast, machined body) is selected with material properties defined.

Step by Step to Perform Inertial Calculations

n Select the measure inertia icon from the Measure toolbar.

n Select the final part body for the calculations. Select the Customise button

n Toggle on the desired calculations.

n Select Apply/OK.

n Select the individual tabs to see the results.

n If needed, toggle on Keep Measure to include the calculation in the Specification Tree To calculate

inertia properties of a cross section, use the measure inertia 2D icon.

Inertia

Measure Between

Measure Item

Measure Inertia

3D or 2D Measurements

Adds results to the specification tree

SelectableInertia

Options


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DMU

Note: Definitions and Differences between G, O and P Inertia

Inertia /G: The Analyst will get the inertial matrix with respect to the centre of gravity of the part.

This calculation is exactly the same as the inertial properties calculation with Centre of Gravity option

in I-DEAS

Inertia/O: the Analyst will get the inertial matrix with respect to global origin.

This calculation is same as inertial properties calculation with Global Origin option in I-DEAS.

Inertia/P: the Analyst will get the inertial matrix with respect to the selected point.

This calculation is the same as the inertial properties calculation with the User Point option in I-DEAS

Inertia

Coordinates of

selectedgeometry


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DMU

To inspect the integrity of the geometry (e.g. wall thickness), perform a cross section on a part. Inorder to do this, the you need to switch the workbench from Part Design to Assembly Design.Sectioning is not available in the Part Design workbench.

Step by Step to Cut a Cross Section

To place a part into a new assembly:

n Select the part from the Specification Tree.

n RMB→ Copy

n Select Start→ Assembly Design from the CATIA pull down menu

n Select the product (empty assembly) from the Specification Tree.

n MB3→ Paste

Cross Section

Opens a new blankassembly and sets to the

assembly work bench

The singlepart is nowinside a

assembly


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DMU

The following steps must be performed in the assembly workbench

To make the section cut:

n Select the Sectioning icon from the Space Analysis toolbar.

The Sectioning Definition window displays. Also, notice that two windows display. One is a sectionwindow, the other is the original window

Cross Section

Cross section Model showing the defined section plane

Note: The user has the option to choose Section Plane Cut orVolume Cut by selecting the volume cut and section

plane icons


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n Move the cursor to the Cutting Plane. Notice that a directional arrow displays. Use LMB to adjustthe size of the Cutting Plane as desired.

n Set the positioning and orientation for the cutting plane.

There are three ways to control the cutting plane:

1.Using Normal Constraint toggle.

2.Using the Edit Position and Dimensions icon.

3.Using the Geometrical Target icon

Using Normal Constraint:

nSelect the Positioning tab from the Sectioning Definition window.

nUse the check box to switch the default cutting planes. (X,Y,Z)

nUse LMB to grab the cutting plane and slide along the selected axis.

Note: Notice that the section window displays the results of the cross sectionas the user moves the cutting plane.

nMove the cursor to the red coordinate system (U,V,W). Notice that a rotational arrow displays.Based on a particular plane in which the cursor is pointed, the plane can be rotated with respect to

that axis. Use LMB to rotate the cutting plane as desired

Cross Section

Resets position


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Using the Edit Position and Dimensions icon

n In the Positioning tab, select the edit position and dimensions icon. The Edit Position andDimensions window displays. This allows the user to control the translation and rotation of the cutting

plane as well.

n Use the Translation Vectors (+Tu, +Tv, etc) to change the location of the cutting plane based on

the value of the translation.

n Use the Rotation Vectors (+Ru, +Rv, etc) to rotate the cutting plane based on the value entered.

Note: All the translation and location moves are based on the W,U,V axis of the cutting plane.

n Select the reset position icon to go back to the original default cutting plane.

Cross Section

Defines the location of

the red coordinate system

of the cutting plane with

respect to global origin

Defines the size

of the cutting

plane


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Using the Geometrical Target icon

n In the Positioning tab, select the geometrical target icon. This command allows the user to selectan entity to define the cutting plane.

n Pick the geometry to define the cutting plane’s location.

Picking on the geometry

n Select the reset position icon to go back to the original default cutting plane.

Cross Section

Note: Notice that as the cursor moves to the surface or feature ofthe part, a square with an arrow displays which indicates the

position and orientation of the cutting plane that will becreated. Use LMB as desired position and orientation aredetermined to create a cutting plane.

Note: All these methods of controlling the cutting plane can be usedin combination as well

Note: By Selecting OK in the Sectioning Definition window. The toolwill add the section into the Product’s Specification Tree. Toget back to the section, double click the section in the

product’s Specification Tree


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DMU

To save and read the section in different graphical formats, CATIA has a built in image tool to captureand save a section or indeed any graphical entity on the workbench.

Step by Step to Capture

n Select Tool→ Image→ Capture from the pull down menu. The Capture window displays.

n Select the options icon. This is used to set the Capture options.

Use the Colour Mode pull down menu to set the colour.

Set the Pixel tab and toggle on White Background.

The tool will automatically capture the picture with a

white background.

n Select the select mode icon to use the window selection to define the area of the capturedpicture.

n Note: Make sure Pixel Mode is toggled on which will provide a better image quality.

n Select the capture icon to capture the picture. The Capture Preview window displays

n Select Save As to save the file in Tiff, Jpeg, etc format into the appropriate folder

Image Capture

Options

Image capture can

be of any windowincluding sections orthe part itself


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Exercise - DMU

Objectives

n Find Data in Teamcenter

n Load Data into V5

n Saving a CAE copy of the model

n Measuring part features

n Taking a cross section

n Adding a material

n Measuring Inertia

n Image Capture


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Exercise - DMU

The purpose of this part of the exercise is to use the search feature of Teamcenter to find the correctpart, check its details and display it in the Teamcenter Viewer for conformation

1. Use the Quick Search tool and search for *CW8M*3K171*A*

How many items are found?

2. Open

How many revisions does it have?

3. Use the summary pane to answer the following regarding the latest revision:

Who is the owner?

Which group does it belong to?

Who Last modified it?

4. Looking at the latest item revision identify the type of CAD dataset?

Find Data in Teamcenter


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5. Use the viewer to display the JT File representation of the model as additional conformation

Find Data in Teamcenter

Note: Rather than using the SearchFeature, The correct item may

alternatively be emailed to yourTC inbox.


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Exercise - DMU

The purpose of this part of the exercise is to get the part into Catia V5. In this case we are not worriedabout ensuring carline position.

1. Prepare Catia / Stating directory to receive the part. Within Catia V5 use the Load Data button to

return to Teamcenter

2. Load the part. From My Teamcenter, select the Latest item revision and use Catia V5→ Load in

Catia V5

3. Ensure the part is up-to-date. Use the Update all icon if not

Load Data into V5

Note: If the component was required incarline position we would need

to load the DC into PSE andthen load the FDR Part into V5

from PSE


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Exercise - DMU

In this exercise, we are not going to wok with the Teamcenter saved model. Instead a copy will besaved to the relevant file space / Data directory.

1. Save a copy of the Catia part. Use File→ Save As

2. Define a suitable storage area and file name

3. Change the properties of the specification tree.

Saving a CAE copy of the model

Note: It would also be possible to save aCAE copy back to Teamcenter

which would be independent of theoriginal if required. See Teamcenter

CAE methods for details

Note: The new File name will not replacethe existing one on the part

specification tree. That can however

be changed under properties ifrequired


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Exercise - DMU

Here the aim is to interrogate the part using the Measure toolbar. This could be done using any of themain Catia Workbenches.

1. Take the following single measurements

2. Hide these measures but do not delete them.

Measuring part features

Note that these measurementwill be added to thespecification tree


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Exercise - DMU

3. Find the Minimum thickness of the ribs shown.



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Exercise - DMU

4. Take fan measurements to confirm the following measurements


Note: It is possible to addin geometry such aspoints / lines / planes

to allowmeasurements if

existing geometry isinsufficient.


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5. Take the X, Y, Z coordinates of the Hard points listed.


Note: This part happens tobe in vehicle position.

However it maybenecessary to load

parts though PSEwith reference to the

DC in Teamcenter toguarantee its invehicle position.

Expand


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Exercise - DMU

The purpose of this part of the exercise is to create a cross section and save it.

To create a cross section it is necessary to be working in the Catia Product Workbench.

1 Copy the part onto the clip board

2.Create a new Catia Product

3. Paste the part into the new product.

Taking a cross section

This results in the part sitting in anew assembly. Note that any

changes made to the part in thepart window will be seen in the

assembly.


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4. Use the section icon on the Space Analysis toolbar

5. Use the Geometrical Target option to position the section as shown

6.The Results section can be seen in a additional window. This can be saved in a number of formats

if required. Note the section is also added to the specification tree

7. Close the section and Product and return to the part

Taking a cross section


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The purpose of this part of the exercise is to add a material to the model. This is used whencalculating the inertia properties as well as in any FE applications.

1. Use the Apply material icon

2. Browse through the JLR materials library as shown and choose the material indicated

3.Drag and drop the material over the part body. It should be shown in the specification tree.

4.Change the material shading to confirm new material.

Adding a material


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Now that a material has been added to the part, use the measure item command to calculate itsmass.

1. Use the Measure tool bar and Measure Inertia command.

2. Select the part body from the Tree structure

3. Confirm the following values. Also notice the value for material density should correspond to thematerial applied

Measuring Inertia


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Geometry Manipulations

Objectives

n Deactivating Features

n Modifying Features

n Create an Orphan Part

n Change Part Body


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Deactivate, allows you to temporarily ignore a feature (or features). For example, deactivating fillets,chamfers, bolts holes, etc is done by Analysts when preparing a part for meshing.

Step by Step to Deactivate a Feature

nSelect the feature from the Specification Tree

nSelect RMB→ Feature Name Object → Deactivate.

Depending on how a particular feature is created, sometimes the Deactivate window is shown and

the user can toggle on Deactivate all Children. If these are the same type of features (children) that

are desired to be deactivated), toggle off Deactivate all children, only deactivate the selected

feature (parent).

nSelect the update all icon.


Update all

Feature Deactivated symbol

Feature is removed from the model


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Sometimes during the updating, an Update Diagnosis window displays with the issue(s) that mayhave negative impact on the creation of the part. The tool will indicate the problematic feature in theFeature column and the diagnosis of the issue. The Analyst can then select the Edit button to try to f ix

the problem or use Deactivate to deactivate the feature that may have caused the problem.

Deactivate Features in a MML (Multiple Model link) Part

n Select the MML Assembly→ RMB→ Representations→ Design Mode.

Note: Switch the workbench to Assembly Design when working on the MML Assembly.

n Select the UPDATE ALL icon (if required).

n Select Edit→ Search from the CATIA pull down menu. The Search window displays



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n Type in the feature name with an asterisk.

n Select the SEARCH AND SELECT icon

n Identify where the features are located among the core models in the MML assembly.

n Select the core model

n RMB→ Part Name Object→ Open in New Window.

n Perform the feature search again and deactivate the feature using Shift Key + RMB→ Selected

Objects→ Deactivate.

`

n Select the UPDATE ALL icon

Note: If an Update Diagnosis window displays when performing an update, select Edit or Deactivateto try to fix the problem.

n Go back to the MML assembly to propagate the result by updating the MML Assembly using the

UPDATE ALL icon.


Shows a link or feature is deactivated


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Step by Step to modify any features (operations) in CATIA

n Double-click on the feature (operation) in the Specification Tree.

Note: The Analyst can pick an entity from the graphic RMB→ Centre Graph and it will be highlightedin the Specification Tree.

n A feature definition window displays.

n Change the size or any definitions as desired.

n Select OK.

n Select the UPDATE ALL icon.

Modifying Features


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The Analyst can create a part without any Specification Tree’s features (history) in CATIA. TheAnalyst could create an orphan part when the geometry manipulations that are going to be performeddo not require the use of the Specification Tree. This is because, with an orphan part the update is

faster and easier, the tool doesn’t need to update all operations (features) in an orphan part asopposed to the part with a Specification Tree.

It is still possible to add features to a orphan part, although it is not possible to modify existing ones.

To Create an orphan part.

n Select the PartBody from the Specification Tree→ RMB→ Copy.

n Select File→ New. The New window displays.

n Select Part.

n Select OK.

n Select the new part from the Specification Tree→ MB3→ Paste Special. The Paste Specialwindow displays.

n Select As Result.

n Select OK.

Create an Orphan Part


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In most cases only one body is required to define the part. This is usually the Part Body

Once Boolean operations have been completed or a orphan part created it may be that the finishedgeometry is in a user created body and the Part Body is empty. The part cannot be meshed within V5

unless the geometry is inside the part Body

To resolve this the command Change Part Body can be used:

To Change the Part Body

n RMB over the body containing all of the part geometry

n Select the Body object from the list and then select Change Part Body

n OK the warning message

The contents of the selected body have now been transferred to the Part Body.

The empty Body can now be deleted

Change Part Body

Documents

CAE CAD Manipulation