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    題名: Transient response of a finite carck upon diffraction of a horizontally polarized shear wave
    其他題名: 平面剪力波對有限長度裂紋之暫態效應解析
    作者: 應宜雄;Ing, Yi-shyong;馬劍清;Ma, Chien-ching
    貢獻者: 淡江大學航空太空工程學系
    關鍵詞: fracture;a finite crack;stress intensity factor
    日期: 1995-12
    上傳時間: 2011-10-18 21:48:39 (UTC+8)
    出版者: 臺北市:中華民國力學學會
    摘要: Abstract- In this study, the transient response for diffraction of a horizontally polarized shear wave of arbitrary shape by a
    finite crack in an elastic solid is investigated. In analyzing .this problem, an infinite number of diffracted waves generated by two
    crack tips must be take into account and it will make the analysis extremely difficult. The solutions are determined by
    superposition of proposed fundamental solutions in the Laplace transform domain. The fundamental solutions to be used are the
    problems for applying exponentially distributed traction and screw dislocation on the crack faces and along the crack tip line,
    respectively. The exact transient closed form solutions of dynamic stress intensity factor for two crack tips are obtained and
    expressed in very simple and compact formulations. The solutions are valid for an infinite length of time and have accounte~ for
    the contributions of an infinite number of diffracted waves. Numerical results for both tips are evaluated which indicate that the
    dynamic stress intensity factors will oscillate near the correspondent static values after the first three waves have passed' the
    specified crack tip.
    關聯: 中華民國力學學會第十九屆全國力學會議論文集(三)=Proceedings of the 19th National Conference on Theoretical and Applied Mechanics (III), 頁 289-296
    顯示於類別:[航空太空工程學系暨研究所] 會議論文

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