Plasticity formulation in optistruct?

Raphael Lima
Raphael Lima Altair Community Member
edited December 2022 in Community Q&A

Hello,

Does anyone know how plasticity is formulated in optistruct?

Reagrds!

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Answers

  • Adriano A. Koga
    Adriano A. Koga
    Altair Employee
    edited December 2022

    Hi Raphael,

     

    Is there a particular aspect that concerns you?

    There are a few changes depending on if your model is running Small Displacements/Deformations or Large Displacements/Deformations. Up to around 5 to 10% you could work with small deformations. But more than that, you should consider Large Deformations theory (by using LGDISP).

     

    Below a few slides from the OptiStruct NL training material.

    image4image

    Additionally, this is how equivalent plastic strain is calculated.

    image

     

     

     

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