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  1. VIPerPW

    Implementation of Knowles type hyperelasticity (UMAT)

    Greetings, I want to implement Knowles hyperelastic model in Abaqus. I've already done it using subroutine UHYPER and it works fine, but what I need is a working UMAT code, as it is supposed to be a base for a future visco-hyperelastic model. I derived the tangent modulus related to Zaremba...

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