Procesos Elastoplásticos con Grandes Deformaciones. Modelo Constitutivo y Aplicación a Metales

Abstract

This paper describes a finite strain elastoplastic constitutive model. The general problem is derived in first term and then the case of metals is studied. In this last case the novelty is the introduction a posteriori of the small elastic strain hypothesis. The numerical implementation of the model in a computational code is discussed. A couple of applications are solved, studying a sheet metal forming as well as impact problems