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拓扑优化

(2010-07-31 13:50:42)

杂谈

Step1: Create Materials and Properties;  Assign to Components

Since components need to reference a material, the materials collectors should be created first

Next we will create two load collectors (Constraints and Forces) and assign each a color

Step3: Create Constraints

Step 4: Create Forces

Step 6: Run the Analysis

A linear static analysis of this c-clip is performed prior to the definition of the optimization process.  An analysis identifies the responses of the structure before optimization to ensure that constraints defined for the optimization are reasonable.

 1 From the Analysis page enter the RADIOSS panel.

Step 7: View Displacement Contour

Step 8: Create the Topology Design Variables

Analysis>>optimization>>topology

Step 9: Create a Volume Response

Change response type: to volumefrac

Step 10: Create a Displacement Response

To create a displacement as a response, you will need to supply a meaningful name for the response, set the response type to displacement, select the node for the response, and select the type of displacement (dof).

Step 11: Create Constraints on Displacement Responses

Step 12: Define the Objective Function

Click response= and select volfrac

Step 13: Run the Optimization Problem

Analysis>>control cards>>SCREENThis will make OptiStruct output the optimization iterations to the output window.

Step 14: View an Iso Value Plot of Element Densities

 From the OptiStruct panel, click the HyperView button.

This will launch HyperView and open the section file cclip_complete.mvw which contains two pages with the results from two files:

Page 1 - cclip_complete_des.h3d: Optimization history results (element density).

Page 2 - cclip_complete_s1.h3d: Subcase 1 results; initial and final (displacement stress).

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