A comprehensive study of a multiplicative elastoplasticity model coupled to damage including parameter identification

In this contribution various aspects for a plasticity model coupled to dama ge are considered. The formulation of the model is performed in the interme diate configuration which occurs as a consequence of the multiplicative dec omposition of the deformation gradient. We will resort to thermodynamic con sistency, continuous tangent operator, algorithmic tangent operator and sen sitivity analysis for parameter identification. Furthermore, for the discre tized constitutive problem a robust iteration scheme with a two-level algor ithm is proposed. In the numerical example material parameters are determin ed by least-squares minimization based on experimental data obtained with a n optical method. (C) 1999 Elsevier Science Ltd. All rights reserved.