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Material Nonlinearity in Topology Optimization

Hello,

I'm trying to use a nonlinear material (MATS1) in topology optimization which is resulting in the following error:

*** ERROR # 4650 ***
The design space for topology/freesize optimization can not contain nonlinear material.

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Is there any way to use a nonlinear material in topology optimization or is it currently not supported?

I'm using HyperWorks 2017.2 with the following hotfixes:

HyperWorks Desktop 2017.2.1
HyperWorks Solver 2017.2.2

Thanks in advance

Manmit

English

OptiStruct

Unfortunately, it is not possible to run topology optimization with non-linear materials.

It is possible with RADIOSS integration (either use NLGEOM or check this tutorial on RADIOSS RD-E: 5100 Optimization in RADIOSS for B-Pillar (Thickness optimization))

Hi, I have the same error but I'm not trying to run topology optimization, only analysis.

Hi, I have the same error but I'm not trying to run topology optimization, only analysis.

please double check if there's no design variable in your model, or try to run the analysis using 'analysis' option, instead of 'optimization'.