Concept Design Using Topology and Topography Optimization

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Chapter 2: Topology Optimization of an Automotive Control ArmSet up loadstepsThe last step in setting up the boundary conditions is to create OptiStruct subcases(loadsteps in HyperMesh). The procedure is to name the loadstep and associate theappropriate load collectors to the loadstep.1. From the BCs page of HyperMesh, access the load steps panel.2. Click name =, type brake, and press ENTER.3. Select loadcols and activate spc and brake from the collector list.4. Click select.5. Click create.6. Click name =, type corner, and press ENTER.7. Select loadcols and activate spc and corner from the collector list.8. Click select and then click create.9. Click name =, type pothole, and press ENTER.10. Select loadcols and activate spc and pothole from the collector list.11. Click select.12. Click create.13. Verify the creation of all three loadsteps by clicking review.14. Click return to go back to the load steps panel.15. Click return to go back to the BCs page.34Concept Design Using Topology and Topography Optimization OptiStruct 7.0Proprietary Information of Altair Engineering, Inc.
Chapter 2: Topology Optimization of an Automotive Control ArmPrepare for OptimizationStep 1: Set up topology optimizationDefine topology design space for solid elementsThese steps define the whole component of design as a designable region. Thecomponent non-design is not affected when optimization is performed.1. From the BCs page, select the optimization panel.2. Click topology.3. Select the create subpanel.4. Select comps.5. Activate design.6. Click Select.7. Select the component type by selecting the type: switch and choosing PSOLID fromthe popup menu.8. To desvar = assign the name solids.9. Click create.10. Click return to go back to the optimization set up panel.Define responses for optimizationThe objective of this exercise is to remove material from the control arm. Three differentforces are applied at one end of the control arm and that node has the maximumdisplacement in the structure. Therefore define the optimization deck with the objectivefunction of minimizing the volume and constraints as the displacement of node 2699 atthe application of the forces..Sinceall three load cases use the same node and direction of displacement,we need to define only one response for the displacement.1. From the optimization panel, select the responses panel.2. For response =, assign the name vol.3. Set the response type: to volumefrac by clicking the switch and selectingvolumefrac from the pop up menu.4. Click create.OptiStruct 7.0Concept Design Using Topology and Topography OptimizationProprietary Information of Altair Engineering, Inc.35
Page 1 and 2: Altair ® OptiStruct ®Concept Desi
Page 3 and 4: Table of ContentsChapter 1: Topolog
Page 5 and 6: PrefaceWho should attendThis course
Page 7 and 8: Chapter 1Topology Optimization of a
Page 9 and 10: Chapter 1: Topology Optimization of
Page 29 and 30: Chapter 2Topology Optimization of a
Page 37: Chapter 2: Topology Optimization of
Page 53 and 54: Chapter 3Topology Optimization with
Page 55 and 56: Chapter 3: Topology Optimization wi
Page 73 and 74: Chapter 4Optimal Rib Pattern for an
Page 75 and 76: Chapter 4: Optimal Rib Pattern for
Page 85 and 86: Chapter 5Topography Optimization of
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Chapter 5: Topography Optimization
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Chapter 6Combined Topology andTopog
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Chapter 6: Combined topology and to
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