Application of Finite Element and Boundary Element Models to Transient Acoustic Problems 951088
The paper focuses on the numerical treatment of transient acoustic problems using finite element (FE) and boundary element (BE) methods. The FE method relies on a pressure formulation and the use of an implicit integration schemes for solving the related second-order differential system. The procedure is shown on cavity (interior) problems but can be extended to exterior problems using the DtN (Dirichlet-to-Neumann) approach. The presented BE method is restricted to 3-D problems and is based on the Kirchhoffs integral representation. The related retarded potential technique presents some interesting features which are stressed: the sparseness of matrices, the particular integration tools required and the time integration procedure for getting boundary variables. An enhanced procedure for reducing the memory requirements is also presented. Numerical applications show the performances of these discrete techniques.
Citation: Coyette, J., "Application of Finite Element and Boundary Element Models to Transient Acoustic Problems," SAE Technical Paper 951088, 1995, https://doi.org/10.4271/951088. Download Citation
Author(s):
Jean-Pierre Coyette
Affiliated:
Numerical Integration Technologies
Pages: 7
Event:
International Conference On Vehicle Structural Mechanics & Cae
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the Ninth International Conference on Vehicle Structural Mechanics and Cae-P-290
Related Topics:
Acoustics
Tools and equipment
Pressure
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