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Analytical prediction of the breakout noise from a rectangular cavity with one compliant wall

Venkatesham, B and Tiwari, Mayank and Munjal, ML (2008) Analytical prediction of the breakout noise from a rectangular cavity with one compliant wall. In: Journal of the Acoustical Society of America, 124 (5). pp. 2952-2962.

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This paper describes an analytical calculation of breakout noise by incorporating three-dimensional effects along with the acoustical and structural wave coupling phenomena. The breakout noise phenomena from cavities are important at low frequencies, and the coupling between acoustic waves and structural waves plays a critical role in prediction of the transverse transmission loss. The first step in the breakout noise prediction is to calculate the inside cavity pressure field and the normal cavity wall vibration by using an impedance-mobility approach, which results in a compact matrix formulation. The second step is to calculate the radiated sound power from an unbaffled plate formulation that poses formidable challenges on computational time. The proposed formulation helps in reducing the computational time substantially by converting quadruple integrals into single integrals using an appropriate coordinate transformation technique. Analytical results are validated with the finite element/boundary element numerical models.

Item Type: Journal Article
Publication: Journal of the Acoustical Society of America
Publisher: American Institute of Physics
Additional Information: Copyright of this article belongs to American Institute of Physics.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 01 May 2009 09:00
Last Modified: 19 Sep 2010 04:57
URI: http://eprints.iisc.ac.in/id/eprint/17531

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