Author(s)

M.P. Divakar & A. Fafitis

Abstract

Boundary element implementation of a rough crack: constitutive model M.P. Divakar,* A. Fafitis* "Structural Research and Analysis Corporation, 1661 Lincoln * Civil Engineering Department, Arizona State University, Tempe, ABSTRACT The boundary element application of a micromechanics based con- stitutive model for rough cracks previously developed by the au- thors is presented. This constitutive model considers the off-diagonal terms in the crack stiffness matrix, and it relates the normal and shear stresses on the rough crack to the corresponding displacement discontinuities. A brief introduction to the boundary element method is presented to illustrate the application of the constitutive model. Formulations are then developed for modeling discontinuities such as frictional interfaces present in a continuous media. The constitutive model is used as a boundary condition to couple the subregions on either side of the discontinuity. Exam- ples of boundary element modeling of frictional i

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