Concept Design Using Topology and Topography Optimization

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Chapter 2: Topology Optimization of an Automotive Control ArmFigure 2-1: Finite element mesh containing designable and non-designable materialOptimization ProcessThe process to complete a topology optimization using OptiStruct is a three-partprocess.• Use HyperMesh to create the appropriate input deck.• Run OptiStruct using the created input deck.• Examine the results.This tutorial will follow the steps outlined below:1. Load the model into HyperMesh.2. Define material properties and assign materials to the components.3. Apply load and boundary conditions.4. Setup the optimization problem using HyperMesh.5. Define the design space for optimization.6. Define optimization responses, constraints, and objective function.7. Solve topology optimization using OptiStruct to determine the optimal materialdistribution.8. Post-process the results.26Concept Design Using Topology and Topography Optimization OptiStruct 7.0Proprietary Information of Altair Engineering, Inc.
Chapter 2: Topology Optimization of an Automotive Control ArmLoad the ModelStep 1: Set up the FEA model in HyperMesh1. Delete the current model by pressing F2 to access the delete panel and selectingdelete model.2. From any main page in HyperMesh, select the files panel.3. Select hm file.4. Click retrieve …, select carm.hm, and click Open.5. Click return.6. From the Geom page, select user prof….7. Select optistruct from the list and click OK.This sets the HyperMesh environment for the OptiStruct solver .Step 2: Set up material propertiesThe components for this exercise have already been created. The next step is to createthe material collectors and assign to each component the appropriate material.Create a material called steel1. From the Geom page select the collectors panel.2. Select the create subpanel.3. Specify the collector type to be mats by clicking the switch to the right of collectortype: and from the pop up menu choose mats.4. Select name =, type steel in the text box, and press ENTER.5. Select card image = and, from the pop up menu, choose MAT1.6. Click create/edit to load the MAT1 card image for the new material, steel.7. Set the values for E to 2E5 and NU to 0.300.To establish values in these fields: Select the field name, click in the text box, type ina value, and press ENTER..Sincethis problem is a linear static analysis with volume as a response, you donot need to define a density value. Density values are required for a normalmodes analysis or if mass is used as a response.8. Click return.OptiStruct 7.0Concept Design Using Topology and Topography OptimizationProprietary Information of Altair Engineering, Inc.27
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: Chapter 2Topology Optimization of a
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
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Chapter 4: Optimal Rib Pattern for
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Chapter 4: Optimal Rib Pattern for
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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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