INTERACTION OF GENERAL PLANE P WAVE AND CYLINDRICAL INCLUSION PARTIALLY DEBONDED FROM ITS VISCOELASTIC MATRIX

• 来源期刊: 力学学报（英文版）
• 学科: 物理学
• 关键词: general plane wave, interface crack, scattering
• 年，卷（期）: 2002,（2）
• 页码范围: 133-145
• 页数: 13页
• 分类号: O3
• 语种: 英文

摘要

The interaction of a general plane P wave and an elastic cylindrical inclusion of infinite length partially debonded from its surrounding viscoelastic matrix of infinite extension is investigated. The debonded region is modeled as an arc-shaped interface crack between inclusion and matrix with non-contacting faces. With wave functions expansion and singular integral equation technique, the interaction problem is reduced to a set of simultaneous singular integral equations of crack dislocation density function. By analysis of the fundamental solution of the singular integral equation, it is found that dynamic stress field at the crack tip is oscillatory singular,which is related to the frequency of incident wave. The singular integral equations are solved numerically, and the crack open displacement and dynamic stress intensity factor are evaluated for various incident angles and frequencies.