TRANSIENT-RESPONSE OF A FINITE CRACK IN A STRIP WITH STRESS-FREE EDGES

We have considered the problem of determining the dynamic stress distribution in an infinitely long isotropic homogeneous elastic strip containing a Griffith crack which is perpendicular to the edges of the strip. The crack is opened by internal pressure with the Heaviside function time-dependence. By using the Fourier and Laplace transforms, we can solve the problem with a set of dual integral equations in the Laplace transform domain. These equations are solved using the Schmidt method. The Laplace inversion of the stress-intensity factor is carried out numerically. © 1980 by ASME.