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VUMAT EXAMPLES for Hyperelastic materials

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  • VUMAT EXAMPLES for Hyperelastic materials

    Hello,

    I am new with VUMAT. Recently I have finished reading VUMAT example for Neo-Hookean material from the "Mechanics of Solid Polymers" textbook. Could anyone share more VUMAT examples of Hyperelastic materials for learning purposes? Thank you very much.

    Regards,

    Willsen

  • #2
    Hello,

    I have written a hyperelastic VUMAT that can handle strain-energy functions of the form:

    W = K1(I1-3)^m + K2(I1-3)^p + K3(I1-3)^q

    which covers the Neo-Hookean, Yeoh, and (almost) Davies-De-Thomas (1994) models. I think it will be published in an appendix of a related work soon. If you want to take a look before then, let me know and I may be allowed to share it with you before it hits the press.

    Regards,
    Travis

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    • #3
      I forgot to add the compressibility term which is required for VUMAT. The form is:

      W = K1(I1-3)^m + K2(I1-3)^p + K3(I1-3)^q + 1/D1(J-1)^2

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      • #4
        Hi,

        Thank you very much for your kind offer. I am quite confident with VUMAT now so all good!
        Congratulation with your publication!

        Regards,

        Willsen

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