ANALYSE DU COMPORTEMENT EN RUPTURE D’UNE FISSURE DANS UNE INTERFACE D’UN BIMATERIAU

Abstract

Bimaterials are usually used in industry because of interest which they present by the association of their properties diametrically opposite. The energy of rupture of a crack interfacial is properties particular compared with that of a homogeneous material. Indeed, the mode of crack propagation is complex. In this work the finite element method is applied to analyze the behavior of a inter facial crack. An approach based on the energy release rate is used to study the effect of interaction. Are highlighted, the evolution of the stress concentration factor, stress intensity factor of a crack emanating from notch and the influence of the elastic properties of the couples on the conditions of crack deviation by the interface of the couples. Several pairs of materials with different mechanical properties will be used to analyze the behavior of cracks and therefore we will use numerical modeling using the code ABAQUS or ANSYS.