RESEARCH PAPERS: Noise Control and Acoustics

Transmission of SH Waves Through a Periodic Array of Elastic Cylinders

[+] Author and Article Information
V. V. Varadan, A. Lakhtakia, V. K. Varadan

Laboratory for Electromagnetic and Acoustic Research, Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802

J. Vib., Acoust., Stress, and Reliab 109(1), 43-47 (Jan 01, 1987) (5 pages) doi:10.1115/1.3269393 History: Received August 01, 1986; Online November 23, 2009


The reflection and transmission characteristics of a grating of identical, circular elastic cylinders, arranged periodically in an elastic slab, are investigated. Use is made of a simple approach synthesized from Fourier-Bessel expansions and the T-matrix method for the analysis of a two-dimensional problem involving SH waves only. It is observed that the nonspecular modes are generally very weak for such gratings in contrast with those for gratings made of periodic bimaterial interfaces. The presented analysis may be easily extened to the case of diffraction of incident P-and/or SV-waves, and should be useful for noise control applications.

Copyright © 1987 by ASME
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