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Acoustic performance of flexible bellows

Munjal, ML and Vinay, J (1998) Acoustic performance of flexible bellows. In: Journal of the Acoustical Society of America, 104 (4). p. 2040.


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Bellows are generally used for vibration isolation in ducts. However, conical expansions and contractions lead to acoustic transmission loss as well. In this paper plane wave propagation through a bellow has been investigated. The wave equation for a stationary medium has been solved exactly with the help of a practical assumption. But, for the case of mean flow, with its convective as well as dissipative effects, an equivalent simple expansion-contraction chamber model has been developed based on some parametric studies. Effects of different parameters like thickness of the bellow wall, radius, length, and Mach number of mean flow have been studied. A reasonable agreement has been found between the theoretical and experimental results.

Item Type: Journal Article
Publication: Journal of the Acoustical Society of America
Publisher: American Institute of Physics
Additional Information: The copyright of this article belongs to Acoustical Society of America
Keywords: Acoustic performance;flexible bellows
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 09 Jul 2004
Last Modified: 19 Sep 2010 04:12
URI: http://eprints.iisc.ac.in/id/eprint/435

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