Dynamic analysis for circular inclusions of arbitrary positions near interfacial crack impacted by SH-wave in half-space

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• 作者：Hui Qi ; Jie Yang ; ^{yangjie04024218@163.com}
• 关键词：Circular inclusion ; Interfacial crack ; Green's function ; Dynamic stress concentration factor (DSCF)
• 刊名：European Journal of Mechanics - A/Solids
• 出版年：2012
• 出版时间：November-December, 2012
• 年：2012
• 卷：36
• 期：Complete
• 页码：18-24
• 全文大小：858 K

文摘

The diffraction of time harmonic anti-plane shear waves by arbitrary positions of inclusions and a finite length interfacial crack embedded in an elastic half-space is considered by using Green's function and complex function methods. With the aid of image method, the expression of scattering wave as well as the Green's function are constructed. A series of Fredholm integral equations containing unknown forces at the linking sections are obtained via the interface ¡°conjunction?technique. The integral equations are reduced to a system of linear algebraic equations by using the effective truncation. Steady-state responses for some parameters are calculated and discussed. Numerical results demonstrate that the geometry under consideration is indeed capable of causing a localized high concentration of wave energy underground. Graphical results for the dynamic stress concentration factors are presented.