Vol.9, No1, 2009, pp. 15-21
 UDC 539.42:519.673

NUMERICAL EVALUATION OF THE STRAIN ENERGY RELEASE RATE WITH ORIENTATION AND POSITION OF A CRACK NEAR A BIMATERIAL INTERFACE

Nabil Kazi Tani, Tawfik Tamine 1

Guy Pluvinage 2

1 Faculty of Mechanical Engineering, University of Sciences and Technology of Oran, Algeria

2 Laboratoire de Fiabilité Mécanique ENIM, Metz, France

Abstract

The finite element method and fracture mechanics concept were used to study the interfacial fracture of bi-material structure. Effects of mechanical materials properties, position and orientation between crack and bimaterial interface are presented. Numerical results show that the energy release rate of the interfacial crack is influenced considerably by parameters of these effects. For several examples studied, a good agreement is obtained with different authors in term of normalised stress intensity factor and energy release rate.

Keywords: bi-material, interfacial crack, mixed mode fracture, stress intensity factor, energy release rate, finite element

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