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Experimental validation of FE/BEM dynamic strain model under diffuse acoustic field loading

Show simple item record Tsoi, W. Ben Gardner, Bryce Cotoni, Vincent 2014-09-05T20:18:17Z 2014-09-05T20:18:17Z 2010-04-19
dc.identifier.citation INCE NOISE-CON 2010, Baltimore, Maryland, April 19-21, 2010 en_US
dc.identifier.clearanceno 09-4755
dc.description.abstract Structural finite element (FE) models naturally output displacement or acceleration response data. However, they can also be used to compute stress, internal forces, and strain response. When coupled with a boundary element model (BEM) of the fluid surrounding the structure, a fully coupled analysis can be performed. Modeling a diffuse acoustic field in the BEM fluid provides an excitation like that found when the structure is placed in a reverberation chamber. Fully coupling the structural FE model to the acoustic BEM model provides a means to predict not only the acceleration response of the panel to diffuse field loading, but also the ability to predict the dynamic stress and strain response. This type of model has been available with current predictive tools, but experimental validation of the prediction of dynamic stress or strain is difficult to find. An aluminum panel was instrumented with accelerometers and strain gages and hung in a reverberation room and subjected to a diffuse acoustic field. This paper presents the comparison of the experimental and predicted results. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.title Experimental validation of FE/BEM dynamic strain model under diffuse acoustic field loading en_US
dc.type Presentation en_US

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