Abstract
A three-node isoparametric shell element well suited for extensive non-linear analyses is developed and used for the simulation of sheet-metal forming processes. Two computational strategies based on this element are presented: a quasi-static implicit one based on an updated lagrangien formulation with a consistent tangent stiffness matrix and a transient explicit one where the diagonal mass matrix is used to compute the nodal acceleration vector. The anisotropic elastic-plastic constitutive equations are treated using a rotated frame subjected to follow the anisotropy axes. Two numerical examples are presented and the two computational strategies are compared.
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