“*** ERROR # 1899 ***

Faisal
Faisal Altair Community Member
edited November 2020 in Community Q&A

Hello Everyone,

1.      I have a model on which i am directly trying to do shuffle optimization I have defined all the parameter such as design variable, response, constraint and objective. After I ran the analysis I am getting this error, “*** ERROR # 1899 ***

  Topology optimization with large displacement nonlinear analysis

  is not supported. For shape/sizing optimization, use debug,LGDSPOPT,1.”

Although I have define LGDSPOPT=1 but still same error. If you have any idea regarding this error please help me out. 

2.      Is it possible to do composite optimization with nonlinear load case?

 

Best Regards,

SFM

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Answers

  • Yuhao He_20868
    Yuhao He_20868
    Altair Employee
    edited November 2020

    Hi Faisal,

     

    Most optimization capability does not support large displacement (or geometric nonlinearity) for now. Does the geometric nonlinearity play a big role in your problem? If not, I would suggest you to turn of the large displacement analysis option.

     

    As far as I know, you can do composite optimization with nonlinear contact. However, large displacement analysis is very challenging to all optimization problems in general, not only to composite optimization.

     

    Yuhao

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