OS-E: 1000 Grid Point Stress Response for Free-Shape Optimization

Grid point stress response of homogeneous material for Free-Shape Optimization is performed.

The objective is to minimize the max grid point stresses in a selected area. In this example, the 3D cylinder is modeled using first order Tetra elements.


Figure 1. FE Model with Loadcases and Loadstep

Model Files

Before you begin, copy the file(s) used in this example to your working directory.

Model Description

This example has a linear static analysis of a cylinder which has force applied on specific locations and constrained in all directions at the bottom. Grid point stress response are defined by setting RTYPE=GPSTR in DRESP1 card. The element used should be solid elements with PSOLID property. Grid point stress response of homogeneous material is supported for Shape and Sizing Optimization also.
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DRESP1 ID LABEL RTYPE PTYPE REGION ATTA ATTB ATT1
Objective
Minimax grid point stresses is a selected area
Design Variables
Free Shape

Results



Figure 2. Grid Point Stresses at Iteration Zero


Figure 3. Grid Point Stresses at Final Iteration