Transient response of an infinite row of collinear Griffith cracks in a saturated porous medium

Abstract

The transient stress distribution is obtained for a saturated porous medium containing an array of equally distributed collinear cracks when each crack is opened by suddenly applied internal pressure. The integral and Laplace transforms are employed to reduce the mixed boundary-value problem to solving the Fredholm integral equation. The influence of pore fluid and the size of the crack with respect to the distance between the neighbouring cracks on the dynamic stress intensity factor are investigated. Numerical results are presented and compared with the corresponding values of the dry medium.