.. _R5.03.36:

**r5.03.36** Behavioral law KICHENIN_NL combining elastoplasticity and nonlinear viscoelasticity
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**Summary:**

This document describes behavior model KICHENIN_NL, intended to describe the mechanical response of polyethylene. It combines an elastoplastic branch with linear kinematic work hardening with a nonlinear Maxwell viscoelastic branch. A modeling of large deformations is accessible via kinematics GDEF_LOG.

As a preamble, it should be noted that this documentation is based on the note [:ref:`Lorentz, 2022 <Lorentz, 2022>`]. It only retains the main elements concerning the formulation and numerical integration of the model. Interested readers are referred to this note and its references for further details as appropriate.


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    Domaine_d_application
    Mod_le_continu
    Int_gration_num_rique
    Bibliographie