The transient analysis of a subsurface inclined crack subjected to a buried dynamic dilatational source
Journal
International Journal of Solids and Structures
Journal Volume
30
Journal Issue
3
Pages
399-412
Date Issued
1993
Author(s)
Abstract
The transient response of a subsurface inclined crack subjected to a buried dilatational source is analysed in this study. This investigation will be helpful in understanding the problems of seismology and waves generated by thermal loading in a cracked body. The solutions are determined by superposition of the fundamental solution in the Laplace transform domain. The required fundamental solution is the exponentially distributed traction on crack faces proposed by Tsai and Ma [1992a, ASME J. Appl. Mech. (in press)]. The exact closed form solutions of the time dependent dynamic stress intensity factors are obtained. These solutions are valid in the time interval from initial loading until the first wave scattered by the crack tip returns to the crack tip after reflection from the free surface. The direction of the crack propagation is predicted by different fracture criteria from the available stress intensity factors. © 1992.
Type
journal article