THE EFFECT OF RESIDUAL STRESSES ON ELASTIC AND ELASTIC- PLASTIC BIMATERIALS WITH INITIAL CRACK PERPENDICULAR TO THE INTERFACE

The analysis of various heterogeneous material structures (composites, welded joints, etc.) should include the effects of residual stresses. In recent papers, the concept of material forces [1,2] was used to investigate the effect of inhomogeneities. It was shown [3-7] that material inhomogeneities in the direction of the crack extension induce an additional crack driving force term, referred to as the material inhomogeneity term, Cinh. The effective crack driving force, Jtip, is then given by: inh far tip C J J +