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Vibration analysis of a circular disc backed by a cylindrical cavity

Gorman, Daniel G. and Reese, J.M. and Horáček, J. and Dedouch, K. (2001) Vibration analysis of a circular disc backed by a cylindrical cavity. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 215 (11). pp. 1303-1311. ISSN 0954-4062

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This paper describes the free vibration analysis of a thin disc vibrating and interacting with an acoustic medium contained in a cylindrical duct. The effects of structural-acoustic coupling are studied by means of an analytical-numerical method that is based upon classical theory and the Galerkin method. The coupling effects are discussed, and results obtained from the analysis are compared with corresponding values obtained both experimentally and from a finite element analysis. There is good agreement between the three sets of results.