Three-dimensional interface cracks in anisotropic bimaterials: The non-oscillatory case

Two-dimensional interface cracks in anisotropic bimaterials have been studi ed extensively in the literature. However solutions to three-dimensional in terface cracks in anisotropic bimaterials are not available. In this paper, a penny-shaped crack on the interface between two anisotropic elastic half -spaces is considered, A formal solution is obtained by using the Stroh met hod in two-dimensional elasticity in conjunction with the Fourier transform method. Fracture mechanics parameters such as the stress intensity factor, crack-opening displacement, and energy release rate are obtained in terms of the interfacial matrix M. To illustrate the solution procedure, a circul ar delaminations ina unidirectional and a cross-ply composite are considere d Numerical results far the stress intensity factors and energy release rat e along the crack front are presented.