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  1. tauron

    Need to compute the derivative of S4R shell element stiffness matrix with respect to Young modulus

    Hi, we use Abaqus shell elements of type S4R for modeling the concrete part of a reinforced concrete plate. We need to know how to compute the derivative of S4R shell element stiffness matrix with respect to Young modulus. For example, like what is done for 2D plane stress elements in eqs...

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