Modélisation du durcissement cyclique de l’aluminium produit au Cameroun

Abstract

Modelling of the cyclic hardening of aluminium produced in
Cameroon

Strain-hardening is a very significant parameter to traduce the
elastoplastic behaviour of materials, particularly for the simulation of their
working by plastic deformation. This paper presents a model of cyclic hardening of two nuances of aluminium produced in Cameroon, the 1200 and the 5005. The experimentation was led under quasi-static or variable stresses with constant amplitude. The results obtained allow to determine the static mechanical characteristics in tension and compression of the studied nuances and to establish their monotonous and cyclic strain-hardening curves. The amplitude of stress is a linear function of the plastic
deformation in a logarithmic scale, which allows a simple modelling of the
law of cyclic work hardening of studied materials.