Viscoelastoplastic thermomechanical constitutive patterns at high rates of strain

Abstract

A phenomenological tensorial pattern has been proposed to describe several thermomechanical behaviours of various materials [1-3]. The study presented here aims at checking whether the theory is effective in modelling the thermomechanical features of the cyclic viscoelastoplastic behaviour of metallic materials at high rates of strain. Several types of numerical illustrations of the cyclic behaviour including relaxation and creep are proposed; in order to suggest qualitatively that with the unique proposed pattern, it is possible to take into account a cyclic behaviour at low strain rate as well as at high strain rate.