https://scholars.lib.ntu.edu.tw/handle/123456789/65188
標題: | Full Field Analysis of an Anti-Plane Interface Crack Subjected to Dynamic Body Forces | 作者: | Ma, Chien-Ching Huang, Kuo-Cheng |
公開日期: | 1999 | 卷: | 36 | 期: | 2 | 起(迄)頁: | 285-309 | 來源出版物: | International Journal of Solids and Structures | 摘要: | In this study, the transient full field response of an interface crack between two different media subjected to dynamic body force at one material is investigated. For time t < 0, the bimaterial medium is stress free and at rest. At t = 0, a concentrated anti-plane dynamic point loading is applied at the medium as shown in The configuration and coordinate system of an interface crack in a bimaterial medium. The total wave field is due to the effect of this point loading and the scattering of the incident waves by the interface crack. An alternative methodology that is different from the conventional superposition method is used to construct the reflected, refracted and diffracted wave fields. A useful fundamental solution is proposed in this study and the full field solution is determined by superposition of the fundamental solution in the Laplace transform domain. The proposed fundamental problem is the problem of applying an exponentially distributed traction (in the Laplace transform domain) on the interfacial crack faces. The Cagniard-de Hoop method of Laplace inversion is used to obtain the transient solution in time domain. Exact transient closed form solutions for stresses and stress intensity factors are obtained. Numerical results for the time history of stresses and stress intensity factors during the transient process are discussed in detail. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/86303 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032736765&doi=10.1016%2fS0020-7683%2897%2900326-0&partnerID=40&md5=d37cf9166ad637efac4bd7ad2a285912 |
ISSN: | 00207683 | SDG/關鍵字: | Dynamic loads; Interfaces (materials); Laplace transforms; Stress intensity factors; Time domain analysis; Cagniard-de Hoop method; Crack propagation |
顯示於: | 機械工程學系 |
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