A Padé approximant reconstruction scheme for fast resolution of structural-acoustic finite element models including porous materials.

QC 20130115
In this work, an efficient solution strategy is investigated for the resolution of multi-frequency structural-acoustic problems including 3D modelling of poroelastic materials. The finite element method is used, together with a combination of a modal-based reduction of the poroelastic domain and a Pad´e-based reconstruction approach. It thus takes advantage of the reduced-size of the problem while further improving the computational efficiency by limiting the number of frequency resolutions of the original problem. An adaptive procedure is proposed for the discretization of the frequency range into frequency intervals of reconstructed solution. The validation is presented on a 3D poro-acoustic example.

Av författaren/redakt...: Rumpler, Romain; Deü, Jean-Franco ...; Göransson, Peter ...

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