Author(s)

J.M. Lorenzo, D.J. Cartwright & M.H. Aliabadi

Abstract

Boundary element weight function analysis for crack surface displacements and strip yield cracks J.M. Lorenzo", D.J. Cartwright*, M.H. Aliabadi' *The West Company, R.D.2 Box 575, ^Department of Mechanical Engineering, Bucknell University, Lewisburg, PA 17873, USA ^Computational Mechanics Institute, Wessex Institute of Technology, University of Portsmouth, Ashurst Lodge, Southampton S04 2AA, UK ABSTRACT The Boundary Element Method combined with Subtraction of Bueckner Singular Fields is used to obtain weight functions for several two dimensional problems which include configurations having body force distrubutions. A general representation of the weight function is used which lead to integrals that can be evaluated analytically to obtain the stress intensity factor and surface displacements of the crack. The determination of crack tip opening displacements for strip yield cracks is reduced to a non-singular integral which can be evaluated in closed form. Stress inten

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