A finite element scheme for acoustic transmission through the walls of rectangular ducts: Comparison with experiment
A finite element scheme for acoustic transmission through the walls of rectangular ducts: Comparison with experiment
Previous work on modelling acoustic transmission through the walls of rectangular ducts has left some open questions about structural damping, radiation damping and the way in which the acoustical radiation should be treated. In an attempt to provide answers to these questions a new numerical theory for the problem is described in this paper. It is both complementary to, and more accurate than, the simpler models described elsewhere. The results are gratifying, being in good agreement with measurements, both in detailed and in overall descriptions of the transmission phenomena. The numerical results are generally in close agreement with those of the previous theoretical approaches, providing some justification for several of the approximations implicit in those models.
387-410
Astley, R.J.
cb7fed9f-a96a-4b58-8939-6db1010f9893
Cummings, A.
1a1fff5a-2b19-42e4-8c67-ffa0433befd6
8 February 1984
Astley, R.J.
cb7fed9f-a96a-4b58-8939-6db1010f9893
Cummings, A.
1a1fff5a-2b19-42e4-8c67-ffa0433befd6
Astley, R.J. and Cummings, A.
(1984)
A finite element scheme for acoustic transmission through the walls of rectangular ducts: Comparison with experiment.
Journal of Sound and Vibration, 92 (3), .
(doi:10.1016/0022-460X(84)90387-0).
Abstract
Previous work on modelling acoustic transmission through the walls of rectangular ducts has left some open questions about structural damping, radiation damping and the way in which the acoustical radiation should be treated. In an attempt to provide answers to these questions a new numerical theory for the problem is described in this paper. It is both complementary to, and more accurate than, the simpler models described elsewhere. The results are gratifying, being in good agreement with measurements, both in detailed and in overall descriptions of the transmission phenomena. The numerical results are generally in close agreement with those of the previous theoretical approaches, providing some justification for several of the approximations implicit in those models.
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Published date: 8 February 1984
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Local EPrints ID: 166467
URI: http://eprints.soton.ac.uk/id/eprint/166467
ISSN: 0022-460X
PURE UUID: c1ff5af6-daf9-4c86-9f71-dda3b4f59eb9
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Date deposited: 29 Oct 2010 10:34
Last modified: 14 Mar 2024 02:13
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A. Cummings
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