Influence of contact interaction between the sides of crack on characteristics of failure mechanics in action of P- and SV-waves

The effect of contact between the sides of a rectilinear crack in the plane R-2 = {x: x(3) = 0} on the characteristics of the failure mechanics is stu died for the case in which the crack is affected by harmonic tensile-compre ssion waves and shifts. The surfaces of the crack may assume any orientatio n relative to the direction of propagation of the waves. The presence of fr iction in the zone of contact of the sides of the crack is taken into accou nt. The method of solving the problem stated is iterative in nature and is based on the solution of a sequence of boundary integral equations for the Fourier coefficients of the displacement discontinuity vector and the conta ct force vector. It is also corrected at each step of the solution so as to satisfy one-sided restrictions in the zone of contact.