Dconstraint in optimization with freq. resp analysis

mabefa
mabefa Altair Community Member
edited October 2020 in Community Q&A

Hi,

I Would like to do an optimization on a component in which I have a freq. resp (direct) loadstep that I created.

I want to set a dconstraint on the stress of every element of the mesh. The constraint would be on the upper bound of the stresses.

Which card do I have to choose in response panel to to that?

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Answers

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

    Hi @mabefa

     

    You can use Freq stress as constraint.

  • mabefa
    mabefa Altair Community Member
    edited June 2018

    I tried using it but the software gives an error saying that that type of constraint is not compatible with PSOLID properties. Do I have to modify something to make it applicable for PSOLID property I have?

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited June 2018

    Please refer attached screenshot from OptiStruct online help.

    <?xml version="1.0" encoding="UTF-8"?>Frequency response stress.JPG

  • mabefa
    mabefa Altair Community Member
    edited June 2018

    So How can I create a frequency response subcase?

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

    Hi,

     

    You can still use Von mises for solid and shells. 

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