Dynamic Interactions Between Cracks : Diffractions of SH Waves which are Incident on Griffith Cracks in an Infinite Body

Abstract

The transient dynamic boundary value problems of elastic bodies with cracks are formulated in the forms of the integral equations. In particular, the equations for anti-plane problems are worked out in detail.Several numerical calculations are carried out and the variations of the stress intensity factors with time are clarified.for the SH step-stress waves which are incident on one or two Griffith cracks in an infinite body.