parta control arm

8/13/2019 PartA Control Arm

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3. Go to Geom page and click on quick edit panel or press F11from your Keyboard.

4. If you are not able to view the fixed point, then click on display fixed point icon

5. Now select the XZLeft Panel View, an zoom in to the location as shown in the image.

6. Now on replace point:option select point(s). and replace the two point with the point on the line, the geometry willbecome mappable automatically.


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Step 3: Create a Hexa Mesh.

1. Go to 3Dpage and select solid map panel.

2. Select multi solidsfrom the radio button.3. Click on solidsand select all.Enter 4 in elem sizeand in source shells: select quardsfrom the drop down list, click on mesh.

4. It will generate a 2D mesh showning the mesh pattern it will generate for the hexa-mesh you can chage number of elements alongthe length of the component by clicking on the edge as shown in figure a number will appear and then when you left click on

number it will increase the number of elements ..

5.

Now again click on mesh.And then click on return twice to exit the hexa mesh panel.

Step 4: update the components, create property, and create rigid elements.

1. Click on Component (3) to expand the list of components. Right click on Non_design component and click on rename and typerigids.

2. Now right click on control arm component, click on rename& type Non_design.

3. Click on propert collector icon


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4. Enter Design in prop name =, select a different colour, select 3Din type =, Select PSOLID in card image, Select the material assteel. Then click on create.

5. Enter Non_Design in prop name =, select a different colour, select 3Din type =, Select PSOLID in card image, Select the materialas steel. Then click on create.

6. Now click on component collector icon7. Select update from the radio button on the bottom left side of your screen

8. Click on comps, check the box next to Non_designand click select.toggle the no propertyoption to property, click on blank space

in front property a list of properties will appear. There select Non_design. Click on Update.

9. Click on comps, check the box next to designand click select.toggle the no propertyoption to property, click on blank space infront property a list of properties will appear. There select design. Click on Update.

10. Click return.11. Go to 1D page and select Rigids.

12. Make sure the radio button is on create, now click on node infront of independent, and select the node where forces orconstraints are applied. Now click on small drop down arrow in front of dependent and select multiple nodesoption and the

select all the nodes on the inner surface of the hole as show in figure. Keep all the other parameters as shown in the image below.

Then click create.


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13. Similarly create rigids for the other two holes.

14. Click return.Step 5: Create load step, as breake, corner and pothole.

As there are three forces applied on the model and we have to restrict the displacement due to all the three forces seperately

therefore we will create three different load steps.

1. Go to Analysis page and clink on Loadstep panel.

2. Enter Brakein name = , Select linear staticsas type, check the box next to SPC and LOAD. Click on blank space in front of SPCandselect SPC. Now click on blank space in front of LOAD and select Brake.Click create.

3. Similarly create two more loadsteps as Corner (SPC as SPC & LOAD as Corner) and Pothole (SPC as SPC & LOAD as Pothole). Andtype as liner static.


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4. Click return.

Step 6: Create one more Constraints on the model.

Here we will create one more constraint on the model because there is no reaction force is applied on the model for the force

acting on Z-direction, so to provide the reaction force we will restrict the translation along Z-axis (dof3) along the line of action of Z-

direction force.1. Expand the Load Collector (4) on the model browser. Right click on SPC and select Make Current.

2. Now go to Analysispage and select constraints

3. Select the node as shown in figure and make sure the check box next to dof3 is marked, uncheck other (dof1, dof2, dof4, dof5,dof6). Make sure all the other parameters will be same as given in the image below.

4. Click create.5. Click return.

Step 7: Save the file and run the Analysis.

1. Click on File pull down menu on tool bar, go to Save Asand select Model.2. Create a new folder in different location and save the file.3. Go to Analysis and select Radioss.4. Set export option: all5. Set run options: analysis6. Set memory options: memory default7. Click on save as and save the .fem file and then click on Radioss.8. Once you see ANALYSIS COMPLETED. Message on the solver window, close the solver window.

Step 8: View the displacement contour plot using HyperMesh.

1. Click on the drop down arrow, of Page Window Layout.And select the two window layout. From the list.

2. Click on 2ndWindow.


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3. Go to File pull down menu on the tool bar, select open and then click on model.4. Now on the bottom of your window click on the folder icon in front of Load model.Select the folder where you have saved your

file before Analysis. In that folder select the .h3d or Altair hyperview Player file, click Open, and then click on Apply. To Load the

results.

5. Now click on contour and the click on Apply.

6. This is the displacement due to load step Brake.To view the displacement due to the other two load cases, change the subcase asshown in the image below.


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7. Click on the 1stwindow and click on Expand/reduce window. To enlarge the 1stwindow.Setting up the Topology Optimization

Step 9: Create Topology Design variable.

1. Go to Analysis page and select Optimization panel.

2. In optimization panel select topology.

3. Enter Design in desvar = , click on propsand select Designfrom the list of properties, select type: as PSOLID.Click create.

4. Go to drawby selecting the radio button. Click on desvar and select design.Indraw type: select single, check the box next to nohole and stamp,enter 3 in thickness =, select the anchor node and first node as shown in the image. Click update.

5. Click return.


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Step 10: Create responses as volume, disp_x, disp_y, disp_z.1. Click on responses panel.

2. Enter Volume in response = , select volume as response type , make sure the toggle is set to total and no regionid. Click create.

3. Enter disp_xin response = , select static displacement as response type, click on nodes and select the node where forces areapplied, select the radio button in front of total disp,click create.

4.

Enter disp_yin response = , select static displacement as response type, click on nodes and select the node where forces areapplied, select the radio button in front of total disp,click create.

5. Enter disp_zin response = , select static displacement as response type, click on nodes and select the node where forces areapplied, select the radio button in front of total disp,click create.

6. Click return.Step 11: Create Constraints for the topology Optimization Setup.

1. Click on dconstraintspanel.

2. Enter x_dispin constraints =, click on response = and select disp_xfrom the list of responses. Click on loadstepsand select brakefrom the list of loadsteps. Now check the box next to upper boundand enter the value 0.05. Click create.

3. Enter y_dispin constraints =, click on response = and select disp_yfrom the list of responses. Click on loadstepsand selectcornerfrom the list of loadsteps. Now check the box next to upper boundand enter the value 0.02. Click create.


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4. Enter z_dispin constraints =, click on response = and select disp_zfrom the list of responses. Click on loadstepsand selectpotholefrom the list of loadsteps. Now check the box next to upper boundand enter the value 0.04. Click create.

5. Click return.Step 12: Create Objective Function.

1. Click on Objective panel.

2. Select minfrom the drop down list, click on response =and select volume from the list of responses.

3. Click create.4. Click return.

Step 13: Save the file and run the optimization analysis.

1. Click on File pull down menu on tool bar, go to Save Asand select Model.2. Create a new folder in different location and save the file.3. Go to Analysis and select OptiStruct.4. Set export option: all.5. Set run options: optimization.6. Set memory options: memory default.7. Click on save as and save the .fem file and then click on OptiStruct.8. Once you see OPTIMIZATION HAS CONVERGED.. FEASIBLE DESIGN Message on the solver

window, close the solver window.

Step 14: View the shape change due to topology optimization, and changes in displacement after optimization process.1. Click on Page Window Layoutand split the window into 4.

2. Click on 3rdwindow and click on open folder3. Click on the folder icon in front of Load Model: and open the folder where you have saved the file before optimization. There

select the _des.h3dfile, this file contains the design history after the Optimization Process. Click on Apply.


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4. Select the last ittration as shown in the figure.

5. Click on contour icon, in Result type: select Element Densities (s), and in Averaging Method: select Simple.And then click Apply.

6. Click on Iso icon, click Apply.on current value: enter 3. Check the box next to Features and Transparent.

This is the final optimized shape which we have received

parta control arm

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