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Deriving time-domain models of structural-acoustic radiation into free space

Hill, SG, Snyder, SD and Cazzolato, B (2005). Deriving time-domain models of structural-acoustic radiation into free space. Mechanical Systems and Signal Processing,19(5):1015-1033.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 2 times in Scopus Article | Citations

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Title Deriving time-domain models of structural-acoustic radiation into free space
Author Hill, SG
Snyder, SD
Cazzolato, B
Journal Name Mechanical Systems and Signal Processing
Publication Date 2005
Volume Number 19
Issue Number 5
ISSN 0888-3270   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-18144391988
Start Page 1015
End Page 1033
Total Pages 19
HERDC Category C1 - Journal Article (DEST)
Abstract A method suitable for calculating the acoustic pressure radiated by a baffled structure into free space in the time domain is presented. The method produces a s-domain transfer function between input force and acoustic pressure at any position in space. It is shown that the order of the Pad approximations inherent in the approach must be selected carefully to obtain good phase accuracy over the frequency range of interest. However, with careful selection of the appropriate parameters, the time-domain results closely match those obtained using the traditional frequency domain approach used in structural acoustics. An alternative modelling method which uses the Euler substitution to create a pressure/force transfer function is developed. The method is shown to require small computational powers and be accurate over a wide frequency range. (c) 2004 Elsevier Ltd. All rights reserved.
Keywords piezoelectric film sensors
active control
flexible systems
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Created: Wed, 28 Nov 2007, 14:16:08 CST