title: A residue-based mode selection and sorting procedure for efficient poroelastic modeling in acoustic finite element applications.
abstract: Analysis of three-dimensional sound propagation in porous elastic media with the Finite Element (FE) method is, in general, computationally costly. Although it is the most commonly used predictive tool in complex noise control applications, efficient FE solution strategies for large-size industrial problems are still lacking. In this work, an original procedure is proposed for the sorting and selection of the modes in the solution for the sound field in homogeneous porous domains. This procedure, validated on several 2D and 3D problems, enables to reduce the modal basis in the porous medium to its most physically significant components. It is shown that the size of the numerical problem can be reduced, together with matrix sparsity improvements, which lead to the reduction in computational time and enhancements in the efficacy of the acoustic response computation. The potential of this method for other industrial-based noise control problems is also discussed.
authors: The Marcus Wallenberg Laboratory for Sound and Vibration Research (MWL), Department of Aeronautical and Vehicle Engineering, KTH Royal Institute of Technology, School of Engineering Sciences, SE-10044 Stockholm, Sweden.
authors: Romain
authors: R
authors: Rumpler
authors: The Marcus Wallenberg Laboratory for Sound and Vibration Research (MWL), Department of Aeronautical and Vehicle Engineering, KTH Royal Institute of Technology, School of Engineering Sciences, SE-10044 Stockholm, Sweden.
authors: Peter
authors: P
authors: Göransson
authors: Structural Mechanics and Coupled Systems Laboratory (LMSSC), Conservatoire National des Arts et Métiers (CNAM), Mechanics-case 2D6R10-2 Rue Conté 75003, Paris, France.
authors: Jean-François
authors: JF
authors: Deü