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Wave component analysis of energy flow in complex structures - Part I: a deterministic model

Wester, E.C.N. and Mace, B.R. (2005) Wave component analysis of energy flow in complex structures - Part I: a deterministic model Journal of Sound and Vibration, 285, (1-2), pp. 209-227. (doi:10.1016/j.jsv.2004.08.025).

Record type: Article

Abstract

A wave-based method is developed for the analysis of vibrational energy flow in built-up structures. The structure is divided into a network of interconnected subsystems and its response to external forcing is expressed as the time-averaged energies of these subsystems. The flow of energy between subsystems is described in terms of generalised ‘wave components’. These propagate perpendicularly to cross-sections of the structure—generally defined at the interfaces between subsystems and the junctions between subsystems—and have characteristic patterns of amplitude variation over the cross-sections which correspond to local eigenfunctions. Reflection and transmission of wave components is described in terms of two global scattering matrices, which are systematically constructed from local coefficients associated with individual subsystems and junctions. The method forms the deterministic basis for an alternative, statistical approach to the analysis of vibrations in complex, uncertain structures, which is described in two companion papers.

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Published date: 2005

Identifiers

Local EPrints ID: 28496
URI: http://eprints.soton.ac.uk/id/eprint/28496
ISSN: 0022-460X
PURE UUID: 59edeb8e-d803-403a-898d-6f2816a5d496

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Date deposited: 02 May 2006
Last modified: 17 Jul 2017 16:01

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Contributors

Author: E.C.N. Wester
Author: B.R. Mace

University divisions

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