Author(s)

Y. Mi & M.H. Aliabadi

Abstract

Invited Paper Dual boundary element method for three-dimensional crack growth analysis Y. Mi*, M.H. Aliabadi Wessex Institute of Technology, Portsmouth University, Ashurst Lodge, Southampton SO 4 Introduction The mathematical degeneration of the boundary element method to crack problems, if the two crack surfaces are considered co-planar, was shown by Cruse* in 1972. This difficulty was overcome by using the crack Green's function by Snyder and Cruse^. The crack Green's function, although ac- curate, is limited to two-dimensional straight cracks. The first widely ap- plicable method for dealing with two co-planar crack surfaces was derived by Blanford, Ingraffea and Liggett^. Their approach which utilizes the multi-domain formulation is general and has been applied in both two and three-dimensional configurations. The main drawback of this method is that the introduction of artificial boundaries is not unique, and thus cannot be easily implemented into an automatic procedure for cra

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