Convergence acceleration using the residual shape technique when solving structure–acoustic coupling with the Patch Transfer Functions method

The forced response of the structure–water-filled cavity system is investigated from the Patch Transfer Functions method. In such a case, a poor convergence of the PTF method is observed when using standard mode expansion to build the cavity-PTF. To improve its convergence and maintain the advantage...

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Bibliographic Details
Published in:Computers & structures 2010-06, Vol.88 (11), p.728-736
Main Authors: Aucejo, M., Maxit, L., Totaro, N., Guyader, J.-L.
Format: Article
Language:English
Subjects:
Acoustics
Computational fluid dynamics
Convergence
Engineering Sciences
Exact sciences and technology
FEM
Fluid flow
Fluids
Fundamental areas of phenomenology (including applications)
Holes
Mathematical models
Physics
PTF
Residual modes
Strong coupling
Structural acoustics and vibration
Transfer functions
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Summary:The forced response of the structure–water-filled cavity system is investigated from the Patch Transfer Functions method. In such a case, a poor convergence of the PTF method is observed when using standard mode expansion to build the cavity-PTF. To improve its convergence and maintain the advantages of substructuring, residual shapes are introduced in the cavity-PTF computation, which is the new material of this article. This technique is successfully applied on numerical examples, highlighting the interest of such an approach, especially in heavy fluid.
ISSN:0045-7949
1879-2243
DOI:10.1016/j.compstruc.2010.02.010