Concentrated impact loading on one face of a semi-infinite crack in an anisotropic elastic material
Journal
International Journal of Solids and Structures
Journal Volume
49
Journal Issue
18
Pages
2681-2685
Date Issued
2012
Author(s)
Wu, K.-C.
Abstract
The response of an unbounded anisotropic elastic body containing a semi-infinite crack subjected to a concentrated impact force on one of the crack faces is studied. An exact solution of the dynamic stress intensity factors is obtained from a linear superposition of the solution of Lamb's problem and a solution of a dislocation emitting from the crack tip. The stress intensity factors exhibit square-root singularity upon the arrival of the Rayleigh wave at the crack tip. As the Rayleigh wave passes through the crack tip, the stress intensity factors either instantaneously assume the static values or gradually approach to zero. Several numerical examples are given for isotropic, cubic and orthotropic materials. © 2012 Elsevier Ltd. All rights reserved.
SDGs
Type
journal article