Study of work hardening models for single crystals using three dimensional finite element analysis

A comparative study of some hardening models that have been proposed for single crystals is presented in this paper. These models are compared by simulating the deformation of FCC single crystals under uniaxial tension using the finite element method. During large deformation of single crystals, multiple-slip systems can be activated resulting in a three-dimensional deformation. Therefore, three-dimensional finite element models have been used for the simulation. A rate dependent constitutive model was implemented into a non-linear large deformation finite element program to simulate the deformation of single crystals. The hardening laws are compared in order to study their ability to predict the three stages of hardening observed experimentally in FCC single crystals. (C) 1999 Elsevier Science Ltd. All rights reserved.