Author(s)

U. Herding & G. Kuhn

Abstract

The process of crack initiation and growth can be numerically simulated by means of damage models. In this work the GURSON model for elastoplastic material behaviour is investigated. It is based on micro mechanics and describes the failure mechanism through initiation, growth and coalescence of voids. Within the framework of thermodynamics of irreversible processes and the concept of internal variables the GURSON model is applied within the boundary element method. Kinematic and isotropic hardening, isotropic damage and arbitrary uniaxial stress-strain relations are used to describe material behaviour. The constitutive equations will be formulated in 3D and applied to two-dimensional and axisymmetric problems at small strain. 1 Introduction In the past decade, CDM was establishe

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