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The scattering of general SH plane wave by interface crack between two dissimilar viscoelastic bodies | |
Wei PJ(魏培君); Zhang SY(张双寅); Wu YL(吴永礼); Li RKY; Wei, PJ (reprint author), Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech Continous Media, Beijing 100080, Peoples R China. | |
Source Publication | Acta Mechanica Sinica |
1999 | |
Volume | 15Issue:3Pages:245-254 |
ISSN | 0567-7718 |
Abstract | The scattering of general SH plane wave by an interface crack between two dissimilar viscoelastic bodies is studied and the dynamic stress,intensity factor at the crack-tip is computed. The scattering problem can be decomposed into two problems: one is the reflection and refraction problem of general SH plane waves at perfect interface (with no crack); another is the scattering problem due to the existence of crack. For the first problem, the viscoelastic wave equation, displacement and stress continuity conditions across the interface are used to obtain the shear stress distribution at the interface. For the second problem, the integral transformation method is used to reduce the scattering problem into dual integral equations. Then, the dual integral equations are transformed into the Cauchy singular integral equation of first kind by introduction of the crack dislocation density function. Finally, the singular integral equation is solved by Kurtz's piecewise continuous function method. As a consequence, the crack opening displacement and dynamic stress intensity factor are obtained. At the end of the paper, a numerical example is given. The effects of incident angle, incident frequency and viscoelastic material parameters are analyzed. It is found that there is a frequency region for viscoelastic material within which the viscoelastic effects cannot be ignored. |
Subject Area | 力学 |
Indexed By | SCI ; EI ; CSCD |
Language | 英语 |
WOS ID | WOS:000082471500006 |
WOS Research Area | Engineering ; Mechanics |
WOS Subject | Engineering, Mechanical ; Mechanics |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/16933 |
Collection | 力学所知识产出(1956-2008) |
Corresponding Author | Wei, PJ (reprint author), Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech Continous Media, Beijing 100080, Peoples R China. |
Recommended Citation GB/T 7714 | Wei PJ,Zhang SY,Wu YL,et al. The scattering of general SH plane wave by interface crack between two dissimilar viscoelastic bodies[J]. Acta Mechanica Sinica,1999,15,3,:245-254. |
APA | 魏培君,张双寅,吴永礼,Li RKY,&Wei, PJ .(1999).The scattering of general SH plane wave by interface crack between two dissimilar viscoelastic bodies.Acta Mechanica Sinica,15(3),245-254. |
MLA | 魏培君,et al."The scattering of general SH plane wave by interface crack between two dissimilar viscoelastic bodies".Acta Mechanica Sinica 15.3(1999):245-254. |
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