A transfer matrix approach for evaluation of the response of a multi-layer infinite plate to a two-dimensional pressure excitation

Sastry, JS and Munjal, ML (1995) A transfer matrix approach for evaluation of the response of a multi-layer infinite plate to a two-dimensional pressure excitation. In: Journal of Sound and Vibration, 182 (1). pp. 109-128.

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Abstract

A 6 X 6 transfer matrix is presented to evaluate the response of a multi-layer infinite plate to a given two-dimensional pressure excitation on one of its faces or, alternatively, to evaluate the acoustic pressure distribution excited by the normal velocity components of the radiating surfaces. It is shown that the present transfer matrix is a general case embodying the transfer matrices of normal excitation and one-dimensional pressure excitation due to an oblique incident wave. It is also shown that the present transfer matrix obeys the necessary checks to categorize the physically symmetric multi-layer plate as dynamically symmetric. Expressions are derived to obtain the wave propagation parameters, such as the transmission, absorption and reflection coefficients, in terms of the elements of the transfer matrix presented. Numerical results for transmission loss and reflection coefficients of a two-layer configuration are presented to illustrate the effect of angles of incidence, layer characteristics and ambient media.

Item Type:	Journal Article
Publication:	Journal of Sound and Vibration
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	26 Apr 2011 10:13
Last Modified:	26 Apr 2011 10:13
URI:	http://eprints.iisc.ac.in/id/eprint/37201

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