Une méthode de perturbation pour les problèmes de plasticité en grandes déformations

摘要: In this work, we introduce new regularization technique to solve elastic plastic structures by ANM within finite strain framework. As, the behaviour exhibits strong non linearities and involves two unilateral conditions, functions; first one permits transition depends upon stress field. The second function allows us take into account unloading on both field its time derivative. An application structural plasticity problems using element method is presented assess ability of proposed algorithm. Mots-clefs : Technique de perturbation ; plasticite regularisation