High stress values in modal frequency response

Guy01
Guy01 Altair Community Member
edited October 2020 in Community Q&A

Hello,

 

In my modal frequency response (sol111), i am having high stress values ex. 15000 MPa, for G=0.06.

My acceleration value does not even exceeds 0.5 g (~4500 mm/s^2), in the signal input.

 

All other static analysis stress values are realistic.

 

Is this normal? IS there any important parameter or value to take into account.

Would appreciate your help.

Thanks

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    Hi @Roche

     

    If you are using Nastran as the solver, Please get in touch with Nastran support. 

  • Guy01
    Guy01 Altair Community Member
    edited May 2018

    Hi Prakash,

     

    Thanks for your reply.

    I meant, is there any parameters to consider on pre-processing in Hypermesh, before launching in Nastran?

    Just wondered if you have faced similar issues in the past, that you have corrected by changing any parameters?

     

    Thanks in advance.

     

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