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Interaction of acoustic waves generated by coupled plateWhen two substructures are coupled, the acoustic field generated by the motion of each of the substructures will interact with the motion of the other substructure. This would be the case of a structure enclosing an acoustic cavity. A technique to model the interaction of the generated sound fields from the two components of a coupled structure, and the influence of this interaction on the vibration of the structural components is presented. Using a mobility power flow approach, each element of the substructure is treated independently both when developing the structural response and when determining the acoustic field generated by this component. The presence of the other substructural components is introduced by assuming these components to be rigid baffles. The excitation of one of the substructures is assumed to be by an incident acoustic wave which is dependent of the motion of the substructure. The sound field generated by the motion of the substructure is included in the solution of the response.
Document ID
19900018148
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Cuschieri, J. M. (Florida Atlantic Univ. Boca Raton, FL, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1990
Subject Category
Acoustics
Report/Patent Number
NASA-CR-186873
NAS 1.26:186873
Accession Number
90N27464
Funding Number(s)
CONTRACT_GRANT: NAG1-1077
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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