DMU Engineering Analysis ReviewPreface

Using This GuideWhere to Find More Information

Getting Started

Inserting a CATAnalysis DocumentUsing DMU Space Analysis From CATAnalysis ResultsEntering DMU Engineering Analysis Review Workbench Browsing a Generated ImageGenerating a Basic Report

Basic Tasks

Results and Image Generation

Generating ImagesActivating / De-Activating ImagesEditing ImagesBasic Reporting

Results Management

Animating ImagesCut Plane AnalysisAmplitude ModulationExtrema DetectionManipulating the Color PaletteImages Layout

Workbench Description

Menu BarResults Management Toolbar

Index

PrefaceDMU Engineering Analysis Review provides an easy to use capability to review thespecifications for and results of Engineering Analysis studies.

Data created with Structural analysis products: GPS, GAS, EST, FMS or data created in by thirdparty applications integrated through CAA. With this tool, any user can easily access and reviewAnalysis results without the need for other Analysis capability, and in the context of the overallproduct definition.In the Context of the digital mockup (DMU), this product takes the integration of Design andAnalysis to a new level with the ability to perform interference checking and measurementsbetween the deformed shape of parts or products under in service loading and the surroundingparts and products. Thus ensuring that required packaging and clearances are validated for bothnominal conditions and operational conditions. In addition, review can be in the form of contourplots or arrow plots, and displays can be animated, and HTML reports of results can be created.

 

  Using This GuideWhere to Find More Information

Using This GuideThis book is intended for the user who needs to quickly become familiar with DMUEngineering Analysis Review. 

 

Where to Find More InformationPrior to reading this book, we recommend that you read:

Infrastructure User's guide Version 5Part Design User's GuideAssembly Design User's GuideReal Time Rendering User's GuideConventions chapter

 

Getting StartedThis tutorial will guide you step-by-step through your first DMU Engineering AnalysisReview session, allowing you to get acquainted with the product. You just need to followthe instructions as you progress.

Inserting a CATAnalysis DocumentUsing DMU Space Analysis From CATAnalysis Results

Entering DMU Engineering Analysis Review Workbench Browsing a Generated Image

Generating a Basic Report

These tasks should take about 15 minutes to complete.

In this scenario one extremity of the assembly smallest tube (Part4) needs to be moved of91.243 mm so that it can match the other part (Part5). You will therefore import the FEMAnalysis document resulting from the imposed displacement.

You start with the following Product document...

     

... then visualize 3D Analysis data ...

   

... and will eventually generate the following html report file.

Click here to open the whole text Basic Analysis Report file that we saved as a text file.

This an extract of the whole html file:

 

Inserting a CATAnalysis DocumentThis first task will show you how to insert a CATAnalysis document in a CATProductdocument. You will then be able to perform DMU Space Analysis operations, browseimages and generate a report from this assembly.

 Open the Custom.CATProduct document.

Before You BeginGo to View -> Render Style -> Customize View and make sure the Shading and Materialsoptions are active in the Custom View Modes dialog box.

 1. Select Product2 feature from the specification tree. 

 

2. Right-click and select Components -> Existing Component... option from the displayedcontextual menu. 

The File Selection dialog box appears.3. Select the desired existing component from the dialog box. In this particular case, selectAnalysis_On_Product.CATAnalysis.

4. Click OK in the File Selection dialog box.

 

The CATAnalysis component is added to the existing ones. Note that the coordinates of the

added component need to be coherent with those of the existing product components.

5. Select Part4 (Part4.1) from the specification tree, right-click and select the Hide optionfrom the contextual menu.This part is now turned into the No Show mode. Thus, only the Analysis results associatedto this part are visualized. You can now launch the desired operations on the assembly.

Of course, the specification tree is updated.

Using DMU Space Analysis FromCATAnalysis Results

You can now perform any of the DMU Space Analysis operations using 3D Analysisresults, as if this was CATPart geometry.

 

1. Go to Start -> Digital Mockup -> DMU Space Analysis workbench.

The main added value is that you can perform a clash analysis computation using thedeformed shape, or still analyze the section deformation of the tube. As shown below,you can perform any measurement between the deformed and the other components ofthe assembly. You can also attach 3D annotations to the 3D results if you need to addcomments to the assembly.

Of course, the accuracy of DMU Space Analysis operations depends on the accuracy ofthe CATAnalysis document (in other words, the size of the FEM mesh elements).

DMU Space Analysis available toolbar:

For more details, see DMU Space Analysis user's guide.

 

2. Open Custom2WithSpa.CATProduct document.

 

3. If needed, select Part4 (Part4.1) from the specification tree, right-click and select theHide option from the contextual menu to turn the part into the No Show mode.

 

 

Entering DMU Engineering AnalysisReview

You will now to enter DMU Engineering Analysis Review workbench.

Before you begin

Make sure you did not install one of the following:ELFINI Structural Analysis Version 5Generative Part Structural Analysis Version 5Generative Assembly Structural Analysis Version 5

Otherwise, you will not access DMU Engineering Analysis Review workbench.1. Double-click the CATAnalysis component.You automatically enter the DMU Engineering Analysis Review workbench.

  

 You now have access to the below features, in the specification tree:

You are now able to: browse any of the specifications in order to return information on the computationhypothesis.manage the display of existing images included in the CATAnalysis document.generate standard images (Translational Displacement Magnitude and Von MisesStress)edit any image in order to visualize results on pre-defined groups of finiteelements.use Tools (Animate, examine results in a plane cut, scale the deformed meshamplitude, global or local extrema, manipulate the color palette, layout images).

 Remember that an image is the 3D visualization of analysis results on the Finite ElementModeler mesh.

 

Browsing Displacement SpecificationYou will now to browse the displacement specification to check whether the smallest tube(Part4) was properly displaced and can can match the other part (Part5).

 1. Double-click on Enforced Displacement.1 feature in the specification tree.

The Enforced displacement dialog box appears.

You can perform you review by browsing the Translation 2 value (set to 91.23mm) atwhich Part 4 was displaced.

 

 

Generating a Basic Analysis ReportYou will now generate a Basic Analysis Report. A Report is a summary of an object setcomputation results and status messages, captured in an editable file.

 1. Click the Basic Analysis Report icon .

The Reporting options dialog box is displayed.

Pressing the button on the right gives you access to your file system for defining a pathfor the output Report file. You can edit the title of the report.

2. Set the path and click OK to close the dialog box.

A HTML file containing the Report of the Static Case Solution objects set computation isdisplayed.

This HTML file contains information relative to the static computation procedure.

 

You will find here below a global view of the whole html file: we split it into three images.

 

First Image:MeshElement TypeElement QualityPropertiesStatic Case

 

 

Second Image:

Static Case :Boundary conditionsSTRUCTURE computationRESTRAINT ComputationLOAD ComputationSTIFFNESS ComputationSINGULARITY ComputationCONSTRAINT ComputationNUMBERING ComputationFACTORIZED Computation

 

 

 

Third Image:DIRECT METHOD computationDeformed MeshVon Mises Stress (nodal value)

 

 

3. If needed, save the file as a text type file.

4. Click here to open the text Basic Analysis Report file.

 

 

Basic TasksThe basic tasks you will perform in the DMU Engineering Analysis Review  workbench arethe following: 

 

Results and Image GenerationResults Management

Image and Result Generation

Image Generation

Generate Image: Generate images that are not those included in the Image toolbar. Thelist of these images will depend on the Case type.

Activate / De-Activate Images: Generate images that are not those included in the Imagetoolbar. The list of these images will depend on the Case type.Edit Images: Generate images that are not those included in the Image toolbar. The list ofthese images will depend on the Case type.

 

Result Generation 

  Basic Analysis Report: Creates an analysis report.

 

Generating ImagesImages can be generated in accordance with the Case type.

 

 

This task shows how to generate images from a given solution.

 

Static/Frequency/Free Frequency Case Solution  You can use the sample01.CATAnalysis document from the samples directory for thistask.

   1. Select the Generate icon from the Results toolbar.

The Image Choice dialog box is displayed with the list of the Image Names available inaccordance with the Case type (Static, Frequency, Free Frequency or Buckling).

2. Select the type of the image you wish to generate.

The dialog box disappears and the image is automatically generated. The feature of thenewly generated image appears in the specification tree.

 

Warning : for the Frequency Case, the mode shapes are arbitrarily normalizeddisplacements. In this case, the images of stress and energy results give only tendenciesrelated to these mode shapes.

 You will find here a table with the Images available in the Image Choice dialog box.

 

Image Names Meaning Case Solution type

Translational displacementmagnitude

Iso-value image of the nodaltranslation displacementsmagnitude.

Static CaseFrequency CaseFree Frequency CaseBuckling Case

Von Mises Stress (nodalvalue)

Iso-value image of nodalVonMises stress. 

Static CaseFrequency Case

 

Activating / De-Activating ImagesYou can modify the current visualization by activating or de-activating images.  

 This task shows how to activate or de-activate an image using the contextual menu.

You can use the Custom02.CATProduct sample.

 1. Right-click the Von Mises Stress (nodal value) feature from the specification tree. 

 2. Select the Image Activate/DeActivate option from the displayed contextual menu.

 The image is now de-activated:

 

The specification tree is updated:

 

Editing ImagesYou can edit images.  

 This task shows how to edit images.

You can use the sample26.CATAnalysis document: you created a Stress Von Misesimage.

 1. Double-click the Deformed Mesh Image object in the specification tree and edit theimage. The Image Edition dialog box appears.

In the Selections tab, the dialog box now let's you select mesh entities for a givenconnection.

These mesh entities are either all the elements included in the mesh part or the elementsor nodes associated to the geometry supporting a specification. This is available for alltypes of specifications: Mesh specifications, connections, loads, restraints and masses.

2. Select the desired mesh entity in the Image Edition dialog box.

 The mesh entity you select in the Image Edition dialog box (whatever the type)corresponds to the visualized selection.  

 

 Products Available in Analysis Workbench

You could also start by creating a Finite Element Model containing a Frequency AnalysisCase, and compute a Frequency Solution prior to beginning this task.

In that case, if you double-click the Deformed Mesh Image object in the specification tree to edit the image, a different Image Edition dialog box is displayed: the Mesh tablet's you modify the shrink coefficient.

 

 

ReportingA Report is a summary of an objects set computation results and status messages, captured inan editable file.    

Once an objects set has been computed (meaning that the user-defined specifications have beenconverted into solver commands, which in turn have been transformed into degree of freedom dataand processed), all data contained in the object is ready for use in the subsequent finite elementcomputation process and the object can be analyzed. 

 

 This task shows how to generate a Report for Computed Solutions:

from DMU Engineering Analysis Review workbench

from DMU Navigator workbench

 You can use the sample02_Image_Loads.CATAnalysis document.

 

DMU Engineering Analysis Review

1. Click the Basic Analysis Report icon . 

The Reporting options dialog box is displayed. 

 

Pressing the button on the right gives you access to your file system for defining a path for the outputReport file. You can edit the title of the report.

2. Set the path and click OK to close the dialog box.

A HTML file containing the Report of the Static Case Solution objects set computation is displayed.  Itcontains information relative to the static computation procedure:

restraints translationloads translation

numberingSPC singularity auto-fixingconstraints factorizationstiffness computationconstrained stiffness and loads computation stiffness factorizationdisplacement computationreactions computationequilibrium checking

For example, you will find the image of the Von Mises Stress (nodal value) you previously generated.

3. If needed, you can perform the same operation with the Frequency Case.

A HTML file containing the Report of the Frequency Case Solution objects set computation isdisplayed.  It contains information relative to the frequency computation procedure. In complement tothe Static Case Report, one finds items such as:a list of vibration frequencies

a list modal participation factors    

 4. Click OK to exit the Report application.

 

In addition to the HTML Report file, the program also generates a Text file ready for user editing.

5. Click here to open the .txt file: sample02_Image_Loads.txt.

 

DMU Navigator

1. Select Start -> Digital Mockup -> DMU Navigator from the toolbar.

OR

1. From any of the DMU workbenches (except DMU Engineering Analysis Review) , select the Tools-> Publish command.

You can now use the available Publishing tools (Start Publish icon from the DMU Data Navigation

toolbar or Tools->Publish->Start Publish command from the menubar).

With the Publishing Tools, you can create a DMU html publish report with snapshots, features, text,VRML. In addition, if you select the Publish Feature icon and then the Analysis current view, a link tothe Analysis Basic report will be automatically created in DMU publish report.

 

 Click here if you wish to enter both the DMU Navigator and Generative Part Structural Analysis report.

For more details on Publishing Tools, see DMU Navigator user's guide.

 

 

Results Management

Results Management: Post-processes results and images. 

Image Animation: Animates an image. 

Cut Plane Analysis: Examines results in a plane cut. 

Amplitude Modulation: Scales the deformed mesh amplitude.

Extrema Detection: Searches for global or local extrema of the analyzed field. Manipulating the Color Palette: Edit the Palette on Von Mises display.

Images Layout: Tiles layout images.

 

Animating ImagesImage Animation is a continuous display of a sequence of frames obtained from agiven image. Each frame represents the result displayed with a different amplitude. Theframes follow each other rapidly giving the feeling of motion.   

By animating a deformed geometry or a normal vibration mode, you can get better ainsight of the behavior of the system. Sometimes you gain a more thoroughunderstanding of the system behavior.  

 

 This task shows how to Animate Images:

from DMU Engineering Analysis Review workbench

from DMU Navigator workbench

You can use the sample26.CATAnalysis document: you created a Stress Von Misesimage.

 

DMU Engineering Analysis Review  

1. Click the Animate icon . 

The image is animated with default animation parameters and the Animation dialog box isdisplayed. You access any point of the simulation at random.

2. Click the Pause button .

The animation is interrupted.

3. You can now change the animation parameters to the desired values:

Define the Loop mode:  Play once in one shot 

Repeat play non stop 

Repeat play and reverse non stop

Play: Jump to start

Plays backward

Steps backward

Pause

Steps forward

Plays forward

Jump to end

Steps Number:To make the animation more or less fluent

Speed

For a smooth animation set the Number of steps parameter to its maximum value (20)and activate the Repeat play and reverse non stop button . 

4. Click the Play forward button .

Animation is resumed, with the new settings taken into account. 

 5. Click OK to exit the Animation application.

 The animation capability is also available for Frequency Solutions.

 

DMU Navigator 

1. Select Start -> Digital Mockup -> DMU Navigator from the toolbar and use the availablePlay a Simulation icon .

OR

1. From any of the DMU workbenches (except DMU Engineering Analysis Review),select the Tools -> Simulation command.

 

With the Play a Simulation functionality, you can animate the image.

For more details on Publishing Tools, see DMU Navigator user's guide. 

 

Cut Plane AnalysisCut Plane Analysis consists in visualizing results in a plane section through the structure.By dynamically changing the position and orientation of the cutting plane, you can rapidlyanalyze the results inside the system.

 

 This task shows how to use the Cut Plane Analysis capability.

 You can use the sample26.CATAnalysis document: you created a Stress Von Misesimage.

 1. Click the Cut Plane Analysis icon . 

The Cutting Plane automatically appears.

 

The Cut Plane Analysis dialog box is displayed.

 

The compass is automatically positioned on the part, with a Cutting Plane normal to itsprivileged direction.

Note that if the compass is already positioned on the view, the normal of the compass istaken into account as the default normal of the cutting plane.

2. Handle the compass using the cursor and rotate or translate the Cutting Plane.For this, you will select an edge of the compass and drag the cursor. As you modify theplane position, results in the Cutting Plane are automatically updated. 

3. Activate the View section Only option in the Cut Plane Analysis dialog box to see thesection relatively to the position of the cutting plane. 

4. De-activate the Show cutting plane option  in the Cut Plane Analysis dialog box to seeonly the boundary of this cutting plane.

5. Click CLOSE in the Cut Plane Analysis dialog box to exit the Cut Plane application.

 

The cut plane capability is also available for Frequency Solutions.All the existing images will be cut, if needed.

 

 

Amplitude Modulation Amplitude Modulation consists in scaling the maximum displacement amplitude forvisualizing a deformed mesh image.

You can either choose a large scaling coefficient to zoom on the deformed geometry or asmall coefficient to obtain a realistic visualization.

 

 This task shows how to use the Amplitude Modulation capability.

You can use the sample26.CATAnalysis document: you created a Stress Von Misesimage.

 1. Click the Deformation Scale Factor icon in the bottom toolbar. 

The Deform Window dialog box is displayed. 

The deformed geometry is visualized with the default values of the following parameters: 

Deformed Coefficient: the scaling factor.

Maximum Displacement: the value in mm of the maximum allowed displacement on theimage. 

 You can edit the Deform Window dialog box dialog box and set the parameters. Thecursor further allows you to dynamically change the scale factor from None to Max.

2. Enter 100mm as Maximum Displacement new value in the Deform Window dialog box.The Magnification cursor is automatically set to Max.

A new image is displayed with your settings taken into account.

3. Click OK to exit the Deform Window dialog box.

 

 The animation capability is also available for Frequency and Buckling Solutions.

  

 

Extrema Detection Extrema Detection consists in localizing points where a results field is maximum orminimum. You can ask the program to detect either one or both global extrema and anarbitrary number of local extrema for your field.

 

 This task shows how to use the Extrema Detection capability.

 You can use the sample26.CATAnalysis document: you created a Stress Von Misesimage.

 1. Click the Search Image Extrema icon. 

The Extrema Creation dialog box is displayed. 

  

You can ask the program to detect given numbers of global (on the whole part) and/orlocal (relatively to neighbor mesh elements) extrema at most, by setting the Global andLocal switches. 

If you activate the Global option, you will launch the detection of the minimum andmaximum global extrema. Global means that the system will detect all the entitieswhich have a value equal to the Minimum or Maximum value.If you activate the Local option, you will launch the detection of the minimum andmaximum local extrema. Local means that the system will search all the entitieswhich are related to the Minimum or Maximum value compared to the two-levelledneighboring entities.

3. Click OK to exit the dialog box.A new image corresponding to the default settings is displayed, with two arrow boxeslocating the points of absolute extremum for the current field and containing informationabout the detected value.

  

 

The Extrema object set containing the two Global Extrema appears under the currentImage object in the specification tree.

 4. Double click the Extrema object set in the specification tree. The Extrema Creation dialog box appears.You can modify the objects set by setting the Global and Local switches.

5. Set the Global switch to off and the Local switch to on. The boxes locating the global extrema disappear, and symbols locating the local extremaare visualized. 

 The Extrema objects set in the specification tree now contains, in addition to the twoGlobal Extrema objects, as many Local Extremum (Maximum or Minimum) objects as youhave required. 

 6. Double-click one of the Local Extremum objects in the specification tree. The Image Extremum Editor dialog box is displayed.

7. Set the Show Label option to on and then OK, in the Image Extremum Editor dialogbox.

A new arrow box is visualized, locating the position of the corresponding point andcontaining information about the detected value.

   8. Click OK to exit the Image Extremum Editor dialog box.

 The extrema detection capability is also available for images obtained under Frequencyand Buckling Solutions.

 

Manipulating the Color PaletteThe von Mises stresses, the Displacements, the Precision, the Principal Stressdistributions are employed along with a Color Palette. 

 

 This task shows how to edit the Palette on Von Mises display.

You can use the sample26.CATAnalysis document: you created a Stress Von Misesimage.

 1. Click on the color palette once.

The color palette is now active (the part viewer is deactivated and the part is shaded) andcan be manipulated: either moved using the middle mouse button or zoomed using themiddle mouse button and then the left mouse button.

Move the paletteUse the middle mouse button and drag the palette to the desired location.

Zoom In / Zoom Out the paletteUse the middle mouse button, then the left mouse button and zoom either in or out thepalette to the desired size.

 

 

Images LayoutGenerated images corresponding to analysis results are superimposed into one imagethat cannot be properly visualized. You can tile these superimposed images into as manylayout images on the 3D view.

 

 This task shows how to tile layout images.

 You can use the sample13.CATAnalysis document from the samples directory for thistask.

Make sure at least one image was created and activated on the part.

 

 

1. Click the Images Layout icon .

The Images Layout dialog box appears. 

2. Select the axis along which you will tile the images, in the Images Layout dialog box. 

3. Click OK in the Images Layout dialog box.

The images are tiled along the Y axis.

 Select the Untile option in the Image Layout dialog box if you want to have theimages superimposed again.You can animate one or more of these images, if desired.Be careful: the cutting plane will cut all the images.

Workbench DescriptionThis section contains the description of the icons and menus which are specific to the workbench ofDMU Engineering Analysis Review.

 

The icons are grouped in toolbars, which can be found on the right and bottom border of youranalysis document.

Menu BarResults Management Toolbar

Menu BarThe DMU - Analysis Engineering Review menu bar contains the following commands:

Tools

For...  See...

Basic Analysis Report  Basic Analysis Report

Animate an Analysis Image  Image Animation:

Cut Plane Analysis  Cut Plane Analysis

Deformation Scale Factor  Amplitude Modulation

Image Extrema  Extrema Detection

Image Layout  Images Layout

 

Results Management ToolbarThe Analysis Tools and Results toolbars contain the following tools to manage results: 

See Generating ImagesSee Reporting

 

See Animating Images

See Cut Plane Analysis

See Amplitude Modulation

See Extrema DetectionSee Images Layout

  

IndexA   

amplitude modulation

analysis

animating

C   color palette

cut plane analysis

E   extrema detection

G   generating

I   image

L   layout

R   reporting

result

V   visualization