An implicit integration algorithm for the finite element implementation of a nonlinear anisotropic material model including hysteretic nonlinearity

摘要

Fully implicit integration schemes have been demonstrated to be very robust and efficient for nonlinear elastoplastic and elastic- viscoplastic models and enjoy widespread use in finite element formulations. The paper introduces a new form of fully implicit local and global algorithms for the integration of nonlinear elastoplastic constitutive laws including anisotropic plasticity and hysteretic small strain elastic nonlinearity.