Ductile fracture of structural metals occurs mainly by the nucleation, growth and coalescence
of voids. Here an overview of continuum models for this type of failure is given. The most …

Elasto-plastic models for composites can be classified into three categories in terms of a
length scale, ie, macro scale, meso scale, and micro scale (micromechanics) models. In …

This study is devoted to the derivation of an approximate yield function for voided single
crystals deforming by crystallographic slip. By making use of a regularized form of the …

An extension of Gurson's famous model (Gurson, 1977) of porous plastic solids,
incorporating void shape effects, has recently been proposed by Madou and Leblond …

The aim of this paper is to provide a homogenized criterion for porous ductile materials
incorporating both void shape and plastic anisotropy effects. This is done by extending …

Implementation and analysis of the anisotropic version of the Gurson‐Tvergaard‐
Needleman (GTN) isotropic damage criterion are performed on the basis of Hill's quadratic …

In this paper, four plastic instability criteria, which are based on the bifurcation theory, are
coupled with the GTN damage model for the prediction of diffuse and localized necking …

The ductile failure of crystalline materials is strongly linked to the growth of intragranular
voids. The estimation of the overall yield criterion thus requires to take into account the …

Void growth in an anisotropic ductile solid is studied by numerical analyses for three-
dimensional (3D) unit cells initially containing a void. The effect of plastic anisotropy on void …

La rupture ductile des alliages métalliques survient suite à la nucléation, la croissance et la
coalescence de microcavités. La première partie de cette thèse est consacrée à l'étude des …