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RESEARCH PAPERS

Flexural Wave Propagation in a Fluid-Loaded Elastic Plate With Periodically Varying Rigidity

[+] Author and Article Information
M. A. Hawwa, A. H. Nayfeh

Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0219

J. Vib. Acoust 119(3), 415-419 (Jul 01, 1997) (5 pages) doi:10.1115/1.2889740 History: Received February 01, 1993; Online February 26, 2008

Abstract

The method of multiple scales is utilized to analyze the propagation of flexural waves in a fluid-loaded elastic plate with periodically varying rigidity. Subsonic modes are coupled under a Bragg condition imposed by the parametric periodicity, leading to a strong stopband interaction. This interaction is analytically described by two coupled-mode equations. The results might be utilized to avoid the undesirable acoustic radiation occurring when subsonic waves encounter a discontinuity.

Copyright © 1997 by The American Society of Mechanical Engineers
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