Define a user defined constraint with admisible stress

Altair Forum User
Altair Forum User
Altair Employee
edited November 2020 in Community Q&A

Hi,

 

I´m trying to define a stress constraint (on a topology optimization) which follows next expression:

 

Response = stress / AdmisibleStress(T)

 

I want to limit this response to 1, since it would achieve my goal of limiting stress (depending of temperature). I suppose that I should create first a function which merges temperature and stress response, to create a relation between them. This is what I have tried on the file below.

I leave what I have been able to do by the moment, I would appreciate any help.

 

Thanks,

 

Pablo.

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2017

    Hi,

     

    I think you can create a DEQTN which can be used as reponse. Please refer to DEQUATION in OptiStruct help 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2017

    I'm going to try it and make you updates

     

    Thanks,

     

    Pablo.

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