淡江大學機構典藏:Item 987654321/46035
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    题名: The similarity analysis of vibrating membrane with its applications
    作者: Feng, Chao-Kang;Lee, Chi-Yuan
    贡献者: 淡江大學航空太空工程學系
    关键词: Boundary conditions;Differential equations;Eigenvalues and eigenfunctions;Laplace transforms;Problem solving;Wave equations;Helmholtz equation;Rayleigh-Ritz method;Scaling law;Similarity analysis;Vibrations (mechanical)
    日期: 2005-06
    上传时间: 2013-03-20 16:31:31 (UTC+8)
    出版者: Kidlington: Pergamon
    摘要: The similarity analysis is applied to the study of vibrating membrane with variable density. In this paper, the design of the eigenvalue problems of the vibrating mode (Helmholtz equation) by the infinitesimal transformation groups is exhibited.

    The exact similarity solutions of the eigenvalue problems of Helmholtz equation with variable weighting function under the spiral and inversion groups are constructed in the regions of spiral, concentric circles, eccentric circles, and upper-half plane with circle removed.

    The similitude and scaling law are also built under the study and manipulation of the differential equations that are known to govern the behavior of the eigenvalue problems of Helmholtz equation. Without the requirement of geometrically similitude or mapping, the eigenvalues of a complicated domain can be obtained directly from a given simple region through the scaling law and they are verified and checked by numerical calculation and the Rayleigh–Ritz method.
    關聯: International Journal of Mechanical Sciences 47(6), pp.961-981
    DOI: 10.1016/j.ijmecsci.2004.12.001
    显示于类别:[航空太空工程學系暨研究所] 期刊論文

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