172 - Investigation of a coupled finite element - wave based technique for 2D steady-state acoustic analysis comparing a direct and an indirect approach
Silar P., Hepberger A., Pluymers B., Desmet W., Bartosch T.
Abstract
These days the finite element method (FEM) is a widely accepted prediction tool for steady-state acoustic analysis. Recently developed wave based technique (WBT) has proven to be a computationally efficient alternative tool, but it is restricted to acoustic problems of moderate geometrical complexity. To overcome this drawback of WBT two hybrid coupling methods between FEM and WBT have been investigated. These coupling approaches benefit from the advantages of both methods combining the flexibility of FEM for complex geometries and of the computational efficiency of WBT. This paper takes a glance on the formerly developed indirect hybrid coupling method and presents a new direct hybrid coupling approach. Additionally a comparison between indirect and direct hybrid coupling methods is discussed on a two dimensional example. The status of actual implementation (3D) is described and an outlook for practical application is given.
Citation
Silar P.; Hepberger A.; Pluymers B.; Desmet W.; Bartosch T.: Investigation of a coupled finite element - wave based technique for 2D steady-state acoustic analysis comparing a direct and an indirect approach, CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
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