Studies in anisotropic plasticity with reference to the Hill criterion

摘要: Algorithms based upon the notion of return mapping have been developed for Hill yield function anisotropic plasticity. The relative accuracy two algorithms is assessed by means iso-error maps. choice algorithm turns out to be much more critical orthotropic criterion than underlying isotropic von Mises plasticity model. A tangent operator that consistent with integration formulated and its efficiency compared classical continuum operator. model has applied three shell/plate structures.