Stress intensity factors around a moving Griffith crack in a non-homogeneous layer between two dissimilar elastic half-planes

摘要

Stresses are determined in the vicinity of a propagating finite crack having a constant velocity in a non-homogeneous elastic layer sandwiched between two dissimilar elastic half-planes. The self-equilibrated system of pressure is applied to the crack surfaces. Application of the Fourier transform technique reduces the problem to that of solving dual integral equations. In order to solve the equations, the differences in the crack surface displacements are expanded in a series of functions that are equal to zero outside the crack. The unknown coefficients in the series are solved by the Schmidt method. The stress intensity factors are calculated numerically for a crack in a non-homogeneous layer between a half-plane made of epoxy resin and a half-plane made of aluminum.