How to simulate rubber material for solid element in NVH simulation?

Thanh Tung Ho
Thanh Tung Ho New Altair Community Member
edited May 2023 in Community Q&A

Hello,
Currently I am building a VTF simulation model to calculate vibration and I am having a hard time simulating the rubber material for the solid element of the damper. I can simulate rubber material through 1D element - CBUSH, but with solid element I really don't know how.
I want to ask if it is possible to simulate elastic material like rubber for solid element? and if so, how?

Thank you very much.

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Answers

  • Brian_20847
    Brian_20847 Altair Community Member
    edited May 2023

    Hi Tung,

    You can use hyperelastic materials for rubber.

    OptiStruct support some models of hyperelastic materials:

    • Mooney-Rivlin
    • Yeoh
    • Arruda-Boyce
    • Ogden
    • HyperFoam
    • Several other types of mathematical models.

    You can create hyperelastic material through MATHE card and PLSOLID for solid element as an image below:

    Thanks.

    image 

  • Thanh Tung Ho
    Thanh Tung Ho New Altair Community Member
    edited May 2023
    Brian_20847 said:

    Hi Tung,

    You can use hyperelastic materials for rubber.

    OptiStruct support some models of hyperelastic materials:

    • Mooney-Rivlin
    • Yeoh
    • Arruda-Boyce
    • Ogden
    • HyperFoam
    • Several other types of mathematical models.

    You can create hyperelastic material through MATHE card and PLSOLID for solid element as an image below:

    Thanks.

    image 

    Hi Brian,

    Thank you so much for answer my question. I have also read through a few documents related to elastic material simulation through the MATHE card. But it seems this card is only suitable for nonlinear simulation, while I am doing VTF simulation. Perhaps using 1D element as CBUSH and CVISC is suitable for simulation for rubber material.

    Thanks.

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