.. _R5.03.21:

**r5.03.21** Elasto (visco) plastic modeling with isotropic work hardening in large deformations
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**Summary**

Here we describe a relationship of thermoelastoplastic behavior with isotropic work hardening written in large deformations and proposed by Simo and Miehe. This model is available in the STAT_NON_LINE command using the RELATION keyword: 'VMIS_ISOT_TRAC', 'VMIS_ISOT_PUIS', or 'VMIS_ISOT_LINE' under the key keyword COMPORTEMENT and with the keyword DEFORMATION: 'SIMO_MIEHE'. A viscous version of this model is also available: 'VISC_ISOT_TRAC' and 'VISC_ISOT_LINE'.

This model is implemented for three-dimensional (3D), axisymmetric (AXIS) and plane deformation (D_ PLAN) models.

The writing and numerical treatment of this law, as well as the associated variational formulation, are presented. It is an Eulerian variational formulation, with an update of the geometry and which takes into account the rigidity of behavior and the geometric rigidity.




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    Introduction
    Notations
    Rappels_sur_les_grandes_d_formations
    Pr_sentation_du_mod_le_de_comportement
    Formulation_variationnelle
    Bibliographie
    Description_des_versions_du_document