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Reduced models for structures in the medium-frequency range coupled with internal acoustic cavities

Abstract : This paper concerns the development of a method adapted for constructing reduced models in the medium-frequency range to a general three-dimensional dissipative structure consisting of an anisotropic, inhomogeneous, viscoelastic bounded medium coupled with an internal acoustic cavity. The reduced models are obtained using the Ritz- Galerkin method for which the projection subspace corresponds to the dominant eigensubspace of the energy operator of the structure in the medium- frequency band of analysis. Two fundamental cases are considered: 1) both the structure and the internal acoustic cavity have a medium-frequency behavior in the frequency band of analysis; 2) the structure has a medium-frequency behavior in the frequency band of analysis while the internal acoustic cavity has a low-frequency behavior.
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Submitted on : Sunday, December 16, 2012 - 9:32:04 PM
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Christian Soize. Reduced models for structures in the medium-frequency range coupled with internal acoustic cavities. Journal of the Acoustical Society of America, Acoustical Society of America, 1999, 106 (6), pp.3362-3374. ⟨10.1121/1.428190⟩. ⟨hal-00765795⟩

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