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Article Dans Une Revue Journal of Vibration and Acoustics Année : 2012

Improving the Patch Transfer Function Approach for Fluid-Structure Modelling in Heavy Fluid

Laurent Maxit
Mathieu Aucejo
Jean-Louis Guyader

Résumé

The vibro-acoustic behaviour of elastic structures coupled with cavities filled with a heavy fluid can be modelled by using the Finite Element Method. In order to reduce computing time, the Patch Transfer Function (PTF) approach is used to partition the global problem into different sub-problems. Different types of problem partitioning are studied in this paper. Partitioning outside the near field of structures to reduce the number of patches of the coupling surface for frequencies below the critical frequency is of particular interest. This implies introducing a non standard modal expansion to compute the PTF accurately enough to guarantee the convergence of the PTF method and reduce computation time in comparison to a direct Finite Element resolution. An application on a submarine structure illustrates the interest of this approach.
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Dates et versions

hal-00744504 , version 1 (04-05-2017)

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Laurent Maxit, Mathieu Aucejo, Jean-Louis Guyader. Improving the Patch Transfer Function Approach for Fluid-Structure Modelling in Heavy Fluid. Journal of Vibration and Acoustics, 2012, 134 (5), pp.051011. ⟨10.1115/1.4005838⟩. ⟨hal-00744504⟩
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