A method to couple acoustic linear problems is presented in this paper. It allows one to consider several acoustic subsystems, coupled through surfaces divided in elementary areas called patches. These subsystems have to be studied independently with any available method, in order to build a database of transfer functions called patch transfer functions, which are defined using mean values on patches, and rigid boundary conditions on the coupling area. A final assembly, using continuity relations, leads to a very quick resolution of the problem. The basic equations are developed, and the acoustic behavior of a cavity separated in two parts is presented, in order to show the ability of the method to study a strong-coupling case. Optimal meshing size of the coupling area is then discussed, some comparisons with experiments are shown, and finally a complex automotive industrial case is presented.
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e-mail: morvan.ouisse@univ-fcomte.fr
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October 2005
Technical Papers
Patch Transfer Functions as a Tool to Couple Linear Acoustic Problems
Morvan Ouisse,
e-mail: morvan.ouisse@univ-fcomte.fr
Morvan Ouisse
LVA-INSA Lyon
, 25 bis Avenue Jean Capelle, Villeurbanne, 69100 France
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Laurent Maxit,
Laurent Maxit
LVA-INSA Lyon
, 25 bis Avenue Jean Capelle, Villeurbanne, 69100 France
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Christian Cacciolati,
Christian Cacciolati
LVA-INSA Lyon
, 25 bis Avenue Jean Capelle, Villeurbanne, 69100 France
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Jean-Louis Guyader
Jean-Louis Guyader
LVA-INSA Lyon
, 25 bis Avenue Jean Capelle, Villeurbanne, 69100 France
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Morvan Ouisse
LVA-INSA Lyon
, 25 bis Avenue Jean Capelle, Villeurbanne, 69100 Francee-mail: morvan.ouisse@univ-fcomte.fr
Laurent Maxit
LVA-INSA Lyon
, 25 bis Avenue Jean Capelle, Villeurbanne, 69100 France
Christian Cacciolati
LVA-INSA Lyon
, 25 bis Avenue Jean Capelle, Villeurbanne, 69100 France
Jean-Louis Guyader
LVA-INSA Lyon
, 25 bis Avenue Jean Capelle, Villeurbanne, 69100 FranceJ. Vib. Acoust. Oct 2005, 127(5): 458-466 (9 pages)
Published Online: December 7, 2004
Article history
Received:
June 1, 2004
Revised:
December 7, 2004
Citation
Ouisse, M., Maxit, L., Cacciolati, C., and Guyader, J. (December 7, 2004). "Patch Transfer Functions as a Tool to Couple Linear Acoustic Problems." ASME. J. Vib. Acoust. October 2005; 127(5): 458–466. https://doi.org/10.1115/1.2013302
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