Problem with MPCs in optimization

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

Hello!

 

When I run an optimization problem with Minimizing weighted compliance subject to volume fraction constraints I get this message and then it runs.

image.png.123df0aec480b65c7ec4316c1161dd7e.png

 

When I change objective to minimize mass subject to stress constraints I get this message and then it crashes after iteration 0.

image.png.5478ea99760c0208e459881a8dd24b05.png

 

The last output message is:

 

'OptiStruct error termination report printed to file
 '5150_More_DVs_MM.stat'.'

 

I am trying to find the reason for termination in this file but I cannot see what went wrong. Could someone please help me with this? I have attached the stat file that the solver refers to.

Unable to find an attachment - read this blog

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Answers

  • tinh
    tinh Altair Community Member
    edited June 2018

    I think you should move elems that bind to MPC into non-design space

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018

    Ok, I will try, thank you!

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