標題: Modal characteristics of symmetrically laminated composite plates flexibly restrained at different locations
作者: Hao, W. F.
Kam, T. Y.
機械工程學系
Department of Mechanical Engineering
關鍵字: Composite plate;Free vibration;Modal analysis;Rayleigh-Ritz method;Structural analysis;Composite materials
公開日期: 1-Jun-2009
摘要: A method for determining modal characteristics (natural frequencies and mode shapes) of symmetrically laminated composite plates restrained by elastic supports at different locations in the interior and on the edges of the plates is presented. The classical lamination theory together with an appropriate set of characteristic functions are used in the Rayleigh-Ritz method to formulate the eigenvalue problem for determining the modal characteristics of the flexibly supported laminated composite plates. Sweep-sine vibration testing of several laminated composite plates flexibly restrained at different locations on the plates is performed to measure their natural frequencies. The close agreement between the experimental and theoretical natural frequencies of the plates has verified the accuracy of the proposed method. The effects of elastic restraint locations on the modal characteristics of flexibly supported laminated composite plates with different lamination arrangements and aspect ratios are studied using the present method. The usefulness of the results obtained for predicting sound radiation behavior of flexibly supported laminated composite plates is discussed. (C) 2009 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijmecsci.2009.03.013
http://hdl.handle.net/11536/7145
ISSN: 0020-7403
DOI: 10.1016/j.ijmecsci.2009.03.013
期刊: INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
Volume: 51
Issue: 6
起始頁: 443
結束頁: 452
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