Topological Optimization - Preserve stress distribution at interface

Altair Forum User
Altair Forum User
Altair Employee
edited September 2022 in Community Q&A

Hello,

I have two objects in contact. I would like to know if it's possible to perform a topological optimization of a part, ex changing the material, so that the stress distribution at the interface between the two parts remains the same as before. Thank you for the attention.

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Answers

  • tinh
    tinh Altair Community Member
    edited November 2019

    As i think, first you need to do contact analysis, after that you extract contact forces

    Then use those forces as BC for topology optimization of single part. You need to constraint it.

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited November 2019

    All Optimization disciplines using nonlinear solution with contact only has been supported in OS for a long time.In V2018, nonlinear responses have been added.Contact pressure and contact force from both S2S and N2S contacts can now be used as a response (DRESP1) in optimization formulation. Refer attached model for contact pressure response for shape optimization. Use latest version and refer online help for detailed information.

    Unable to find an attachment - read this blog

  • Daniel Andersson
    Daniel Andersson New Altair Community Member
    edited September 2022

    Hi!
    Replying to an old thread but hoping someone might see this anyway.
    I'm conducting a similar study and have some problems with the contact pressure.
    When using N2S contact, the contact is unstable and I get some high pressure concentrations in the contact.
    Using S2S contact seems to solve this but then my run stalls when it's going into the optimization routine. No error, it just stalls.
    Any ideas?

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