Concept Design Using Topology and Topography Optimization

Chapter 1: Topology Optimization of a Structural C-ClipProblem StatementPerform structural optimization on a structural c-clip (see Figure 1-1) ensuring that aminimum amount of material is used and movement at the end nodes of the opening(see A and B in Figure 1-1) does not exceed 0.14mm in the y-direction.Objective functionMinimize volumeConstraints 1) Translation in the y-axis for node A < 0.07mm2) Translation in the y-axis at node B > -0.07mmDesign VariablesElement densitiesOptimization 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 resultsThese are the steps the exercise follows.1. Load the geometry into HyperMesh.2. Define the material properties and components.3. Generate a finite element mesh.4. Apply loads and boundary conditions.5. Create load case.6. Set up optimization problem using HyperMesh.7. Define the design space for optimization.8. Define optimization responses, constraints, and objective function.9. Solve topology optimization using OptiStruct to determine the optimal materialdistribution.10. Post-process the results.4Concept Design Using Topology and Topography Optimization OptiStruct 7.0Proprietary Information of Altair Engineering, Inc.