Application of Finite Element and Boundary Element Models to Transient Acoustic Problems

951088

04/01/1995

Event
International Conference On Vehicle Structural Mechanics & Cae
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/951088
Pages
7
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.
Additional Details
Publisher
Published
Apr 1, 1995
Product Code
951088
Content Type
Technical Paper
Language
English