Modèles de plasticité et viscoplasticité pour le chargement cyclique
Keywords:
plasticity/viscoplasticity, cyclic loading, finite elementsAbstract
The classical models ofplasticity and viscoplasticity ofmetals, exhibiting anisotropie behavior under cyclic loading, ought to invariably include kinematic hardening in arder to capture the Bauschinger effect observed experimentally. In this paper we discuss the numerical implementation of one such mode/ of kinematic hardening, known as Armstrong-Frederick or Chaboche nonlinear kinematical hardening. Stress integration algorithm and the consistent tangent modulus ensuring the quadratic convergence rate are presented. Severa/ numerical examples are presented to illustrate the efficiency of our formulation.
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References
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