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    題名: Dynamic interfacial crack propagation in elastic–piezoelectric bi-materials subjected to uniformly distributed loading
    作者: Chen, Xi-Hong;Ma, Chien-Ching;Ing, Yi-Shyong;Tsai, Chung-Han
    貢獻者: 淡江大學航空太空工程學系
    關鍵詞: Uniformly distributed loadings;Interfacial crack;Transient waves;Elastic–piezoelectric;Surface wave
    日期: 2008-02
    上傳時間: 2013-03-20 16:57:21 (UTC+8)
    出版者: Kidlington: Pergamon
    摘要: In transversely isotropic elastic solids, there is no surface wave for anti-plane deformation. However, for certain orientations of piezoelectric materials, a surface wave propagating along the free surface (interface) will occur and is called the Bleustein–Gulyaev (Maerfeld–Tournois) wave. The existence of the surface wave strongly influences the crack propagation event. The nature of anti-plane dynamic fracture in piezoelectric materials is fundamentally different from that in purely elastic solids. Piezoelectric surface wave phenomena are clearly seen to be critical to the behavior of the moving crack. In this paper, the problem of dynamic interfacial crack propagation in elastic–piezoelectric bi-materials subjected to uniformly distributed dynamic anti-plane loadings on crack faces is studied. Four situations for different combination of shear wave velocity and the existence of MT surface wave are discussed to completely analyze this problem. The mixed boundary value problem is solved by transform methods together with the Wiener–Hopf and Cagniard–de Hoop techniques. The analytical results of the transient full-field solutions and the dynamic stress intensity factor for the interfacial crack propagation problem are obtained in explicit forms. The numerical results based on analytical solutions are evaluated and are discussed in detail.
    關聯: International Journal of Solids and Structures 45(3-4),pp.959-997
    DOI: 10.1016/j.ijsolstr.2007.09.014
    顯示於類別:[航空太空工程學系暨研究所] 期刊論文

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