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Proceedings Paper

Acoustic radiation prediction of a compressor from 3D experimental spatial dynamics modeling
Author(s): David E. Montgomery; Robert L. West; Ricardo A. Burdisso; Hugo E. Camargo
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Paper Abstract

An application of experimental spatial dynamics modeling is demonstrated for predicting the direct acoustic radiation of a vibrating structure based on experimental velocity response data. A scanning LDV was used to measure velocity response at thousands of locations on a operating reciprocating Freon compressor. Positionally registered data was acquired at multiple scanning positions of the LDV. A weighted least-squares discrete finite element formulation was applied to reconstruct the continuous 3-D velocity response field from the experimental data for a single frequency. The 3-D surface velocity model provided the data necessary for predicting acoustic radiation with a Finite Element/Boundary Element acoustic code. Experimental verification was achieved by acquiring acoustic measurements all around the compressor and comparing the results to the predicted response. The primary motivation for acoustic analysis of the compressor is to reduce the operating noise. This is the first time experimental dynamics analysis has been linked directly to the acoustic analysis of the operational compressor.

Paper Details

Date Published: 8 September 1994
PDF: 11 pages
Proc. SPIE 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (8 September 1994); doi: 10.1117/12.185305
Show Author Affiliations
David E. Montgomery, Virginia Polytechnic Institute and State Univ. (United States)
Robert L. West, Virginia Polytechnic Institute and State Univ. (United States)
Ricardo A. Burdisso, Virginia Polytechnic Institute and State Univ. (United States)
Hugo E. Camargo, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2358:
First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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