ABSTRACT
The three-dimensional problem of an elliptic crack at the interface of two dissimilar isotropic elastic solids and crack faces subjected to normal pressure equal in magnitude and opposite in direction is considered. Using the Cartesian coordinate system, the mixed boundary at a crack plane gives rise to three pairs of dual integral equations. Under normal pressure the three pairs of integral equations are reduced to two pairs of dual integral equations. They are further reduced to a Cauchy singular equation and solved by Plemet’s formula. Various quantities of interest viz. stress intensity factor and crack energy release rate useful for fracture analysis have been obtained by a new limiting process. In last section the penny shaped crack at the interface of two transversely isotropic media is discussed.
