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Structural Acoustics of a Rectangular Panel Backed by a Cavity: An Analytical Matrix Approach

Jain, Nitin K and Sonti, Venkata R (2017) Structural Acoustics of a Rectangular Panel Backed by a Cavity: An Analytical Matrix Approach. In: JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, 139 (3).

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Official URL: http://dx.doi.org/10.1115/1.4035378


The coupling matrix in structural-acoustic systems carries the entire information about the coupled resonances. We have found an elegant way of presenting this matrix and computing its determinant analytically (in a closed-form) for light fluid loading cases. The determinant gets factorized into a product. This form can be used to gain an insight into the new order of the coupled resonances. The specific example of a rectangular panel backed by a cavity is taken to demonstrate the method. This being the primary objective of the work, secondarily, the form of the matrix so derived is used to compute the new coupled resonances using a simple iterative scheme requiring a starting guess. Numerical values are compared with those given in the literature and also using the commercial package VIRTUAL LAB.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ASME, TWO PARK AVE, NEW YORK, NY 10016-5990 USA
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 03 Jun 2017 09:32
Last Modified: 03 Jun 2017 09:32
URI: http://eprints.iisc.ac.in/id/eprint/57083

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