Ex 1 Analyzing a Solid Part

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Exercise 1 - Analyzing a Solid Part


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UGS Corp. 2006. All rights reserved.Femap with NX Nastran 1-2

Exercise 1 Analyzing a Solid Part

Linear stress analysis of a lower control arm Import a lower control arm modeled in Solid Edge

Apply Constraints and Loads to the geometry

Mesh the control arm

Display the results

Learn more how to

Use the Model Infoand Entity Editorwindows to review the values

of the material properties attached to the Solid Edge part

Use View manipulation to change the orientation of a model anddynamically rotate a model


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1. Start Femap. An empty model file should appear on your screen.

2. Open the Preferences dialog box with the File, Preferences

command. Select the Geometrytab. Set the Solid Geometry Scale

Factor to Meters (1,). Press OKto accept.


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3. Use File, Import, Geometrycommand and from Femap_Trainingfolder, import the Solid Edge Part, LCA.par

4. Save the Femap model as a new file Femap_Trainingfolder

a) Use the File, Savecommand


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5. In the Model Infowindow, expand theModelobject and the Propertiesand

Materialsobject trees.

a) If the Model Info and/or Entity Editor

windows are not open, select the

Tools, Entity Editorand Tools, ModelInfocommands as needed to openthese windows.

b) Select the material 1.LCA.parunderthe Materials object.



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6. Display the properties of thevalues of the material of the

material defined in the Solid

Edge model.

a) Double press the Entity

Editorwindow title bar toexpand the window and

view the values of the

material. Scroll the window

as needed to see all the

values.b) Double press the Entity

Editorwindow again todock the window back to

its previous position.



7/17 UGS Corp. 2006. All rights reserved.Femap with NX Nastran 1-7

7. Apply constraints to the holes on the ends of the control arm.a) Change the view to the Dimetric view by using the F8key to

open the View Rotatedialog box. Select Dimetricand thenpress OK.

b) Select the Model, Constraint, On Surface command. TheCreate or Activate Constraintdialog box will open. EnterCS1 as the title and press OK.




8. Apply constraints to the holeson the ends of the control arm.

a) Select the four inner surfaces

that define the holes on ends

of the control arm. Notice that

as you move the mouse,

different surfaces are

highlighted and that you can

select through the part.

b) Press the Preview SelectedEntitiesbutton to highlight the

selected surfaces in theFemap model.

c) Press OKto confirm theselection of the four surfaces.





9. Continue to apply constraints to theholes on the ends of the control arm.

a) In the Create Constraints on Geometryselect the Pinned No Translationbutton, and then press OK.

b) press Cancelto exit the command.c) To rotate your model, you should be

able to see triangles designating that the

holes on the end of the bracket are

pinned (the letter T is displayed to

designate that translation is fixed.



10. Apply a load to the top of the control arma) Select the Model, Load, On Surface

command. The Create or Activate Loaddialogbox will open. Enter LS1 as the title and

press OK.

b) Select the top surface on top on the boss on

the right end of the control arm and press OKto confirm the selection.

c) In the Create Loads on Surfaces

dialog box, select Force.

a) Set the Directionto Normal to Surface.

b) Enter-250as the Magnitude.

c) Press OKto create the load.

d) Press Cancelor use the ESCkey to

exit the Load on Surface command.




11. Turn offdisplay ofallgeometry except for curves

and turn offnodes

a) In the View Toolbar, select the

View Visibilityicon to open the

View Quick Options orControl-Q

b) Select the Geometry Offbutton. This turns off the

display of all geometry.

c) Check the Curvecheckbox to

display curves.

d) Uncheck the Nodeoption.

e) Press Doneto close thedialog box.




12. Mesh the part

a) Select the Mesh, Geometry, Solidscommand. Since there is only onesolid part in your Femap model, you will not be prompted to select the

part(s) to mesh. If you have a Femap model with multiple solid parts,

you will get the Entity Selection Select Solids to Meshdialog box.

b) Press OKto generate the mesh. Your model should appear like thefollowing:




13. Toggle off the display of the mesh sizea) On the View Toolbar, pull down the

View Stylemenu and select Mesh Size.

14. Setup the linear statics analysis of the

part by creating an Analysis Set.

a) Select the Model, Analysiscommand.

b) In the Analysis Set Managerdialog

box, press the Newbutton.

c) In the Analysis Setdialog box, setAnalysis Typeto1. Static.

d) EnterTitleas Linear Statics.e) Press OKto close the dialog box.




15. Display the boundary conditions andoutput requests for this analysis set.

a) Expand the Master Requests

and Conditionstree by pressing

on the + symbol next to Master

Requests and Conditions.

b) Expand both the Boundary

Conditionsand Output Requests

trees.

16. To start the analysis, press the

Analyzebutton. This will close the

Analysis Set Managerdialog box and

open the Analysis Monitorwindow.


NOTE: Active Constraint and Load Set(s) are automatically set as the Master

Requests and Conditions for a new Nastran analysis set.




17. Save the model in NASTRANformat (.NAS) and in NEiNastran

Editorpress F5 (Analysis Run ).

Editor displays the progress of the

simulation. Once the simulation is

complete, the results should be

automatically read into your Femap

model. You can confirm this by

looking at the NEiNastran

Termination Status, then close the

editor.




18.Access to postprocessing dataa) In the model window, press

the Right Mousebutton and

select Post Data.

19. In the Select PostProcessing

Data, set display for deformedshape and stress contours

a) In Output Vectors, choose 1.

Total Translationfor

Deformation

b) Set Contourto 60031..SolidVon Mises Stress.

c) Press OKto close the box.


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20. Turn on the stress contours and the deformed shape using Post Toolbar.a) Select the Contouricon.

b) Select the Deformedshape icon.

21. Turn off display of the undeformed model


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Ex 1 Analyzing a Solid Part

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