Pipe Stress Interface User Guide

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Disclaimer

Information of a technical nature, and particulars of the product and its use, is given by AVEVASolutions Ltd and its subsidiaries without warranty. AVEVA Solutions Ltd and its subsidiaries disclaim

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The AVEVA products described in this guide are to be installed and operated strictly in accordance withthe terms and conditions of the respective license agreements, and in accordance with the relevantUser Documentation. Unauthorised or unlicensed use of the product is strictly prohibited.

First published September 2007

AVEVA Solutions Ltd, and its subsidiaries

AVEVA Solutions Ltd, High Cross, Madingley Road, Cambridge, CB3 0HB, United Kingdom

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User Guide

Contents Page

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Pipe Stress Interface User GuideContents

User Guide

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:1

About thi s User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:1

Overview of the PSI Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:1

Starting the Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:1Groups Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3:1

Creating a Stress Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3:1

Adding and Removing Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3:1

Rebuild Selected Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3:3

Find a Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3:3

Display Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:1

Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:1 Animat ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:3 Animation Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:4Processing Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:4

Active Str ess Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:4

Menus and Toolbars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:1

Context Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:1

Pipe Stress Interface Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:2

Node Details Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:2


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Pipe Stress Interface User GuideContents

Display Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:2Renumbering Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:3

Checking the Stress Group for Errors . . . . . . . . . . . . . . . . . . . . . . . 6:1Data Consistency Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6:2

Node Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6:2Node Errors - Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6:2

Pipe Stress Interface Defaul ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7:1

PDMS to CAESAR II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8:1

Creating a CAESAR II Neutr al File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8:1

Converting a CAESAR II Neutral File to a CAESAR II Inpu t File . . . . . . . . . . . . 8:2

Opening a CAESAR II Input File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8:3

CAESAR II to PDMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:1

Creating a Report Fi le . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:1

Converting a CAESAR II Inpu t Fil e to a CAESAR II Neutral File . . . . . . . . . . . . 9:2

Naming and location of fil es coming back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:2

Getting Stress Data into PDMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:2

Displaying Load Cases in PDMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:3

Edit ing Return Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:4

Clash Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:5


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Pipe Stress Interface User GuideIntroduction

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1 Introduction

1.1 About this User GuideThis document provides guidance to the piping/stress engineer on how to create andconfigure stress groups using the Pipe Stress Interface (PSI) application. It is assumed that

the piping/stress engineer has a basic understanding of the PDMS software.

1.2 Overview of the PSI Applicat ionThe PSI application allows you to create stress groups from existing pipe lines within thePDMS Design application. When a stress group has been created the PSI application willcreate a CAESAR II CII format file, which can be selected in CAESAR II and converted to aCAESAR II _A format file. The stress engineer can then perform stress calculations on thetransferred stress group.

Once the stress engineer has finished the analysis; he can create a report file (withextension .out) and a CAESAR II neutral file showing the modified pipe. These files can be

then be imported back into PDMS to assist the piping engineer update the PDMS model tomatch.


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Pipe Stress Interface User GuideIntroduction


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Pipe Stress Interface User GuideStarting the Application

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2 Starting the Application

1. Start the Pipework Application, the Pipework Application Form is displayed.

Figure 2:1. Pipework Application Form

2. Select Utilities>Pipe Stress Interface from the main menu Figure 2:2.: Utilities pull-down menu .


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Figure 2:2. Utilities pull-down menu


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3. A Default Creation Zone form is now displayed Figure 2:3.: Default Creation ZoneForm . Select a zone in which to create your Stress Groups from the form and selectOK .

Figure 2:3. Default Creation Zone Form

If no zone is found, a new zone should be created with its purpose set to PSI; only zoneswith their purpose set to PSI will be displayed in the Default Creation Zone (PSI is thedefault selection for Stress Zones; this can be modified in the PSI defaults form).

Note: A Stress Group is a PDMS pipe with a list of branches to be stressed.

4. The Pipe Stress Interface form is now displayed Figure 2:4.: Pipe Stress InterfaceForm .

Figure 2:4. Pipe Stress Interface Form


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Pipe Stress Interface User GuideGroups Tab

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3 Groups Tab

3.1 Creating a Stress Group1. To create a new Stress Group, select the New Stress Group button on the Pipe

Stress Interface forms Groups tab ( Figure 2:4.: Pipe Stress Interface Form ). A New

Stress Group Name form is displayed ( Figure 3:1.: New Stress Group Name Form );enter the name of your new stress group and select OK . To close the window withoutcreating a new stress group select the Dismiss button.

Figure 3:1. New Stress Group Name Form

Note: Stress Group names containing slashes or periods are not valid and will cause later problems if used.

2. Once you have created a new Stress Group it will be displayed in the Existing Groupsbox ( Figure 3:2.: Existing Groups Box ) on the Pipe Stress Interface form and in theDesign Explorer hierarchy if displayed.

Figure 3:2. Existing Groups Box

3.2 Adding and Removing Members1. To add branches to a Stress Group, select the Stress Group you want to add to by

clicking on it in the Existing Groups list and then click the Ad d/Remove Membersbutton on the Pipe Stress Interface form. The Pipe Stress Interface now becomes


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greyed out and inactive.Note: The lowest level to add to a Stress Group is a branch; branches can be split if itis necessary to stress part of a branch.

2. Select the branches to include in the Stress Group by graphically selecting them usingthe left mouse button. Figure 3:3.: Branches included in the Stress Group shows thebranches to include in a stress group have been selected in red.Note: This colour might vary depending upon your configuration settings.

Figure 3:3. Branches included in the Stress Group

3. To remove a branch which you have selected, select it again and you will be promptedwith a choice to remove the selected branch from the stress group. ( Figure 3:4.:Remove Branch dialogue )

Figure 3:4. Remove Branch dialogue

4. Once you have finished selecting the branches to include in your stress group selectthe Esc (escape) key. The Pipe Stress Interface form will now become active.


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5. The branches that you selected to include in your stress group should now be listed inthe Group Members box ( Figure 3:5.: Group Members Box ). Members can be addedor removed from a group at any time by selecting the Ad d/Remove Mem bers button

or right clicking on a Stress Group to reveal a context menu and selecting Ad d CE or Remove CE . See Context Menus for more details.

Figure 3:5. Group Members Box

3.3 Rebuild Selected GroupThe Rebuild Selected Group button allows you to rebuild and refresh members of thecurrently selected group.

3.4 Find a Group

The Find Groups button allows you to determine what Stress Groups the current elementbelongs to. Graphically select a branch and select the Find Groups button and a form willbe displayed that lists the Stress Groups that the branch belongs to.


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Pipe Stress Interface User GuideDisplay Tab

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4 Display Tab

4.1 GraphicsThe Graphics section ( Figure 4:1.: Graphics section ) on the Display Tab contains two radiobuttons which can be toggled between; Main Nodes and Case Nodes and three check

box options; Branches, Graphics and Connected which can be checked on/off.

Figure 4:1. Graphics sectionToggling between the Main Nodes and Case Nodes (Load case nodes returned from after stressing) shows the node numbers of the respected selection in the 3D Design window.(Figure 4:2.: Nodes shown on branch )

Figure 4:2. Nodes shown on branch

Checking the Branches box shows the names of the branches in the selected Stress Groupin the 3D Design window. ( Figure 4:3.: Branch names shown )


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Figure 4:3. Branch names shown

Checking the Graphics box means that all graphics are turned on. Not checking theGraphics box only shows the current Stress Group in the 3D view, i.e. all other pipes,equipment and structures are not shown ( Figure 4:4.: Stress Group shown only ).

Note: Current limitation: it may be necessary to use the right-button context menu item

refresh to show the current group after un-checking the Graphics box


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Figure 4:4. Stress Group shown only

The Connected box turns the equipment that is connected to the Stress Group on and off in

the 3D view ( Figure 4:5.: Connected equipment turned on ).

Figure 4:5. Connected equipment turned on

4.2 AnimationThe An imation section on the Display Tab allows you to view the processing order of thecomponents in a Stress Group. Firstly select the Stress Group you want to view from theExisting Group box, and then select the Show button. The individual components of theselected Stress Group will be highlighted in the 3D view in the order in which they will beprocessed ( Figure 4:6.: Processing Order of a Stress Group ).


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Figure 4:6. Processing Order of a Stress Group

4.2.1 Animation Speed

The speed at which the processing order is display in the 3D view can be controlled by theSpeed track bar ( Figure 4:7.: Speed Track Bar ). To view the order faster slide the bar to theright, to view the order slower slide the bar to the left.

Figure 4:7. Speed Track Bar

4.2.2 Processing Order

Branches are processed in the order in which they appear in the Group Members box. Tochange this processing order select the branch you want to move in the Group MembersBox ( Figure 3:5.: Group Members Box ) and click on the up or down arrows to the right of thebox.

Note: Current Limitation: the Group Members box does not always update when the upand down arrows are selected. To force an update switch to a different stress-groupand back.

4.3 Active Stress GroupThe original pipe is displayed by default in red and the returned stress pipe is displayed ingreen by default ( Figure 4:8.: Returned pipe with minimal deflections ), but both of these canbe changed in the Interface Setting s .


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Figure 4:8. Returned pipe with minimal deflections

The transparency of the currently active stress group can be altered as shown in Figure4:9.: Display options (It is set to Solid as default). Both the Main Group and the currentlyselected Load Case can be changed independently.

Off removes the current active group from the 3D view.

Figure 4:9. Display options


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Pipe Stress Interface User GuideMenus and Toolbars

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5 Menus and Toolbars

5.1 Context MenusContext menu are ones that pop up when you right-click over certain items in a form. Theyare used to gain access to context sensitive commands. There is one context menus on thePipe Stress Interface linked to the items in the Existing Groups box ( Figure 3:2.: ExistingGroups Box ).

Existing Group context menu

Right-clicking an item in the Existing Group box i.e. the name of a Stress group brings up acontext menu as shown in Figure 5:1.: Context Menu on the Existing Group box below.

Figure 5:1. Context Menu on the Existing Group box

Delete current Grou p Deletes the currently selected Stress group

Show Node Details Brings up the Show Details form as shown in Figure 5:2.:Node Details Form

Refresh curr ent Group Rebuilds and refreshes members of the currently selectedgroup


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Figure 5:2. Node Details Form

5.2 Pipe Stress Interface Toolbar The PSI toolbar ( Figure 5:3.: Main menu and toolbars ) is located under the main menu bar.

Figure 5:3. Main menu and toolbars

Each icon on the PSI toolbar and its assigned action or purpose is listed in Table 5: 1.: TableMenu Shortcut Items below.

Table 5: 1. Table Menu Shortcut Items

5.3 Node Details FormThe Node details form ( Figure 5:2.: Node Details Form ) can also be displayed by selectingthe Edit Nodes button on the Output/Input tab in addition to accessing it via the ExistingGroup context menu.

5.3.1 Display Options

The columns displayed on the Node Details form can be customised from the Pipe StressInterface Defaults form.

Show Pipe Modification form

Modify Stress Defaults (See chapter 4)


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The Node Details form has two radio buttons ( Figure 5:4.: Display Format ). Selecting AllNodes displays all node on the form (inactive and active nodes), selecting Ac tive Nodes

just displays active nodes i.e. those nodes with a node number.

Figure 5:4. Display Format

5.3.2 Renumber ing Nodes

Nodes of a stress group can be renumbered by selecting the Renumber Nodes buttonlocated on the Node Details form ( Figure 5:5.: Node Renumbering Form ).

Figure 5:5. Node Renumbering Form

Single Node Renumbering

To renumber a single node, select the appropriate node in the list and enter a new nodenumber in the New Number text box. Select Update Numbers to view the changes andthen select Ap ply to save the changes.

Note: If you choose a node number that is already in use then you will be asked if you wantto renumber all subsequent nodes; these will be renumbered according to theincrement value in the Increment text box.


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Cascading Node Renumb ering

When you select a node to be renumbered using the Cascade option, all subsequent nodesare also renumbered according to the increment value in the Increment text box.

Reset Butto n

This resets all nodes to their original node numbers.


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Pipe Stress Interface User GuideChecking the Stress Group for Errors

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6 Checking the Stress Group for Errors

The Check Group button on the Output/Input tab checks the selected Stress Group for Datacon and Node errors. When the Check group button is selected it displays a tabbedwindow ( Figure 6:1.: Pipe Stress System Errors form ). Results from the checks aredisplayed under the appropriate tab.

Figure 6:1. Pipe Stress System Errors form


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6.1 Data Consistency ErrorsThe Data Consistency Erro rs tab displays Data Consistency errors for each branch in the

Stress Group.

6.2 Node ErrorsThe Node errors tab shows problems such as the component weight not being set. Theseerrors should be rectified before the pipe is sent to be stressed.

6.2.1 Node Er ro rs - Weigh t

If the weight of a component such as an instrument is not set, then an error in the NodeErrors tab will be display:

Unable to Find Weight f or INST /FE-117INST =15392/5691

As there is no weight is the catalogue for this, it can be set locally in the design by use of aUDA (User-defined Attribute) called PSIWEIGHT. The PSIWEIGHT attributes valueremains persistent once set and overrides the catalogue value.

To set the PSIWEIGHT UDA modify the components attributes by selecting:Modify>Attributes from the main menu.

Note: To see changes to the list of Datacon and Node Errors, refresh the Stress Group(See Context Menus ) before selecting the Check Group button. This will insure thatall changes to the Stress Group are up to date.

Setting a temporary weight f or a Stress Run

1. In the Existing Group box (Figure 3:2.: Existing Groups Box ), right-click on theselected stress group and select Show Node Details from the context menu. SeeFigure 5:1.: Context Menu on the Existing Group box for more details.

2. The Node Details from will now be displayed ( Figure 5:2.: Node Details Form ).3. Locate the component thats weight needs to be change. (If the weight is zero the Error

column will be flagged as True on the Node Details form)4. Right-click anywhere on the components row to bring up a context menu ( Figure 6:2.:

Display Node Attributes ).

Figure 6:2. Display Node Attributes

5. Select Display node attributes from the context menu.6. Alternatively select the Node Attributes button the Node Details form.7. A form will be displayed with the majority of the fields being read-only. However if the

weight is zero then the weight field can be changed. Once you have changed theweight to a suitable value, select Ap ply and a message will be displayed warning you


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that the changes made by this method are only temporary. See Figure 6:3.:Confirmation Message .

Figure 6:3. Confirmation Message

Note: Further changes to weight values can be made within Caesar II.


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Pipe Stress Interface User GuidePipe Stress Interface Defaults

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7 Pipe Stress Interface Defaults

The Pipe Stress Interface Defaults form allows the user to configure PSI to suit the usersproject data. This can be configured in many ways so it is important to provide facilities touse this data rather than make project changes to suit PSI.

The defaults file is principally used to tell PSI where to extract information and what units toexpect, but it also defines how PSI works in the user environment.

When the Modify Stress Defaults icon is selected from the PSI toolbar, thePipe Stress Interface Defaults form is displayed ( Figure 7:1.: Pipe Stress InterfaceDefaults Form ).

Figure 7:1. Pipe Stress Interface Defaults Form

The Pipe Stress Interface Defaults form has five tabs:

Database Units Interface Settings Expressions Restraint Data Node Form Display Columns

For information on how to use the Pipe Stress Interface Defaults form, refer to the PSI Admin guide .


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Pipe Stress Interface User GuidePipe Stress Interface Defaults


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Pipe Stress Interface User GuidePDMS to CAESAR II

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8 PDMS to CAESAR II

8.1 Creating a CAESAR II Neutral FileTo create a CAESAR II Neutral file for a selected Stress Group, select the Write Data to ciifile button on the Output/Input tab .

Important: Do a Save Work immediately after creating a CAESAR Neutral File so that alldata relating to the Stress Group is saved within PDMS.

Once the button has been selected three folders called input , output and logs are used tostore the data. They are located in the same area as the project directories e.g.C:\ProjectPath\Project\Sampsi where the name of the project is Sam . The files containedwithin these folders are named according to the name given to your Stress Group. SeeTable 8: 1.: Input and Output Folders .

The input folder contains the newly created CAESAR II Neural File (*.cii) which can be inputinto Caesar II.

The output folder contains an xml file which contains pipe stress data exported from PDMSin a predefined schema.

The logs folder contains a HTML reports viewable via a web browser: _log.html whichcontains information about the conversion from the *.xml file to the Caesar II Neural File.The _log.html contains version information for the .cii converter, and also any messages todo with the running of the conversion process - it is a good place to look if things go wrong.It also contains information about the PDMS elements translated, and any assumptions and


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default values used (for example missing weights or wall thicknesses). The stress engineer may find it useful to have a look at this file.

Table 8: 1. Input and Output Folders

8.2 Converting a CAESAR II Neutral File to a CAESAR IIInput File

It is necessary to convert the neutral file created in the Pipe Stress interface to a Caesar IIInput file before the Stress Group can be viewed and analysed in Caesar II.

1. Start up Caesar II and Select Tools>External Interfaces>CAESAR II Neutral Filefrom the main menu ( Figure 8:1.: Tools pull-down menu ).

Figure 8:1. Tools pull-down menu

2. The Neutral File Generator form is displayed ( Figure 8:2.: Neutral File Generator box ). Select the radio button labelled Convert Neutral File to CAESAR II Input File .

3. Select the Browse button and navigate to the *.cii file in the input folder created by thePipe Stress Interface.

4. Select the Convert button. A message confirming the conversion is displayed.

Folder Name Examples of files produced

(To CAESAR II)

(From PDMS 12.0)


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Figure 8:2. Neutral File Generator box

8.3 Opening a CAESAR II Input Fi le In Caesar II, Select File>Open from the main menu, select the Caesar II Input File

(*._A) and select Open (Figure 8:3.: Opening a Caesar II Neutral File ).

Figure 8:3. Opening a Caesar II Neutral File

Select Input>Piping from the Main menu to display the Caesar II piping inputspreadsheet which contains all the information of the Stress Group created in PDMS.(Figure 8:4.: Piping Input Form )


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Figure 8:4. Piping Input Form


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Pipe Stress Interface User GuideCAESAR II to PDMS

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9 CAESAR II to PDMS

In order to bring back stress data from CAESAR to PDMS, two CAESAR files need to becreated;

Report File (*.OUT) containing Displacement data for one or more Load Cases

Neutral file(*.CII) of the stress pipe

9.1 Creating a Report FileIn CAESAR II open the appropriate piping input file (*._A) ( Figure 8:3.: Opening a Caesar IINeutral File ) which should now be ready to be stressed and has been error checked inCAESAR. Then select Output>Static from the main menu to display the Static OutputProcessor screen.

Figure 9:1. Static Output Processor Screen

Next, select one or more load cases under Load Cases Analysed. For information onediting load cases please see the CAESAR II User Guide. Then Select Displacementsunder Report Options which will output translations and rotations for each node. Other report options may be selected too, but are not passed back into PDMS.


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Note: It is important to select the 132 column report option under Miscellaneous Optionsrather than the standard 80 column report, otherwise PSI might encounter problemsreading back the data.

Note: It is advised that you dont add the optional two title lines in CAESAR for similar reasons as above.

Now save the report file File> Save .

9.2 Converting a CAESAR II Input File to a CAESAR IINeutral FileIn order for PDMS to determine if any changes have been made to the stress pipe withinCAESAR, the current piping input file needs to be converted to a neutral file.

Important: This step must implemented either directly before the producing the report fileor directly after, so that the representation of the pipe in consistent in both files.

1. Select Tools>External Interfaces>CAESAR II Neutral File from the main menu(Figure 8:1.: Tools pull-down menu ).

2. A Neutral File Generator box should now be displayed ( Figure 8:2.: Neutral FileGenerator box ). Select the second radio button labelled CAESAR II Input File toNeutral File.

3. Select the Browse button and navigate to the appropriate *._A file.4. Select the Convert button. A message confirming the conversion should be displayed.

9.3 Naming and locat ion of f iles coming backIn order for PDMS to find the two new files from CAESAR (neutral and report) they need tobe saved to the Output directory which is located in the same area as the project directoriese.g. C:\ProjectPath\Project\Sampsi where the name of the project is Sam . The naming of the files is also important; the new files should have the same name as the correspondingXML file in the output folder.

9.4 Getting Stress Data into PDMSTo get data back into PDMS, select a Stress Group from the Existing Groups box ( Figure3:2.: Existing Groups Box ) which has been stressed in CAESAR and has a correspondingneutral and report file in the output folder.

Now select the Convert Stress Data button on the Output/Input tab . If this is successful anew XML file ( StressGroupName Ret.XML) will be created and saved to the return folder which is located at the same place as the input and output folders.

If for any reason the process fails e.g. the CAESAR report file is missing, then an error willbe displayed ( Figure 9:2.: PSI Error ).


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Figure 9:2. PSI Error

A HTML log (*_RetLog.html) is also created and stored in the logs folder every time theConvert Output button is selected. The log gives more detail on what the conversionprocess has found and where, if any problems have occurred. Any Errors will be highlightedin Red, Warnings in Blue and Restraints in green.

Figure 9:3. Table Output and Return folder contents

9.5 Displaying Load Cases in PDMSOnce a return XML file has been created it can be opened and loaded into CAESAR byselecting the Read Stress File button on the Output/Input Tab . The return XML filesshould all be stored in the return folder and the file browser should automatically navigateto this.

Folder Name Examples of files produced


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Figure 9:4. Load Case Models

Note: Make sure you have the corresponding Stress Group selected in the ExistingGroups box so that the main pipe and load case models can be shown in the 3Dview.

Note: You may have to re-select the Stress Group after opening the file to see the changes.The Load Case Model list should now be populated with a list of load cases; any invalidload cases will be deleted. To view different load cases overlaid on the original pipe, simplyselect the required load case from the list.

9.6 Editing Return NodesReturn nodes can be edited by selecting the Edit Return Nodes button on the Output/Input tab .

Once this button is selected a Node Details form will be displayed containing information onthe returned nodes.

Figure 9:5. Return Node Details Form

The return node details form includes two new columns; deflection and status. Deflectionsare set for active nodes that have been stressed and have deflection data returned toPDMS. The status column is also set for active nodes. Any new nodes will be set to New ;deleted nodes will be set to Deleted and nodes which are unchanged are set to False .

New Nodes

New nodes that have been added in CAESAR e.g. an expansion loop will be displayed in

PDMS as node numbers in space connected by a dotted line, as can be seen below:


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Figure 9:6. New nodes added in CAESAR and displayed in PDMS

9.7 Clash CheckingLoad cases can be clash checked by selecting the clasher icon on the Output/Input tab

. Select the load case you want to clash check from the list of load case models andselect the clasher icon. Any items that clash will be added to the drawlist.


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Index

12.0Index page 1

Pipe Stress Interface User Guide

A

Animation . . . . . . . . . . . . . . . . . . . . . . . . 4:3speed . . . . . . . . . . . . . . . . . . . . 4:3 , 4:4

Applicationstarting . . . . . . . . . . . . . . . . . . . . . . . 2:1

C

CAESAR IIconverting . . . . . . . . . . . . . . . . . . . . . 8:2create neutral file . . . . . . . . . . . . . . . 8:1open input file . . . . . . . . . . . . . . . . . . 8:3to PDMS . . . . . . . . . . . . . . . . . . . . . . 9:1

Caesar IIcreate neutral file . . . . . . . . . . . . . . . 8:1

Checkingstress group . . . . . . . . . . . . . . . . . . . 6:1

Clash Checking . . . . . . . . . . . . . . . . . . . . 9:5

D

Defaultspsi . . . . . . . . . . . . . . . . . . . . . . . . . . . 7:1

Display Options . . . . . . . . . . . . . . . . . . . . 5:2

E

Errorsdata consistency . . . . . . . . . . . . . . . . 6:2node . . . . . . . . . . . . . . . . . . . . . . . . . 6:2weight . . . . . . . . . . . . . . . . . . . . . . . . 6:2

F

Formnode details . . . . . . . . . . . . . . . . . . . 5:2

G

Graphics . . . . . . . . . . . . . . . . . . . . . . . . . 4:1Group

active stress . . . . . . . . . . . . . . . . . . . 4:4find . . . . . . . . . . . . . . . . . . . . . . . . . . 3:3rebuild . . . . . . . . . . . . . . . . . . . . . . . 3:3

Groups Tab . . . . . . . . . . . . . . . . . . . . . . 3:1

M

Membersadd . . . . . . . . . . . . . . . . . . . . . . . . . . 3:1remove . . . . . . . . . . . . . . . . . . . . . . . 3:1

Menus . . . . . . . . . . . . . . . . . . . . . . . . . . 5:1context . . . . . . . . . . . . . . . . . . . . . . . 5:1

N

Node Cascadingrenumbering . . . . . . . . . . . . . . . . . . . 5:4

Node Singlerenumbering . . . . . . . . . . . . . . . . . . . 5:3

Nodesnew . . . . . . . . . . . . . . . . . . . . . . . . . 9:4renumbering . . . . . . . . . . . . . . . . . . . 5:3

Nodes Returnedit . . . . . . . . . . . . . . . . . . . . . . . . . . 9:4


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Pipe Stress Interface User Guide

P

PDMS to CAESAR II . . . . . . . . . . . . . . . . 8:1

Processing Order . . . . . . . . . . . . . . . . . . 4:4PSI Applicationoverview . . . . . . . . . . . . . . . . . . . . . . 1:1

R

Report Filecreate . . . . . . . . . . . . . . . . . . . . . . . . 9:1

S

Stress Groupcreating . . . . . . . . . . . . . . . . . . . . . . . 3:1

T

Toolbar psi . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:2

Toolbars . . . . . . . . . . . . . . . . . . . . . . . . . 5:1

Documents

Pipe Stress Interface User Guide