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  1. raffaeleEPFL

    Subroutine for evaluating a user stiffness matrix for element S8R

    I'm trying to find a user subroutine that can give me the opportunity to change the transverse shear stiffness values of the stiffness matrix in a nonlinear way. I've already implemented a subroutine UMAT for S8R but with this one I cannot control the transverse shear stiffness. I thougth it...

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