A Hybrid Wave Based - Modally Reduced Finite Element Method for the Efficient Analysis of Low- and Mid-Frequency Car Cavity Acoustics

Document Number: 2009-01-2214

Date Published: May 2009

Author(s):
Bert Van Genechten - Katholieke Universiteit Leuven
Bert Pluymers - Katholieke Universiteit Leuven
Dirk Vandepitte - Katholieke Universiteit Leuven
Wim Desmet - Katholieke Universiteit Leuven

Abstract:
This paper presents a newly developed hybrid simulation technique for uncoupled acoustic analysis of interior cavities. This method applies a Wave-Based model for a large, geometrically simple portion of the acoustic cavity. The superficial details of the problem domain are modeled using a modally reduced finite element model. The resulting hybrid model benefits from the computational efficiency of the Wave-Based Method, while retaining the Finite Element Method's ability to model the actual geometry of the problem in great detail. Application of this approach to the analysis of a moderately simplified acoustic car cavity shows the improved computational efficiency as compared to classical finite element procedures and illustrates the potential of the hybrid method as a powerful tool for the analysis of three-dimensional interior acoustic systems.

File Size: 1196K
Product Status: In Stock

Included in: V118-6

See other papers presented at SAE 2009 Noise and Vibration Conference and Exhibition, May 2009, St. Charles, IL, USA, Session: Vibro Acoustic Analysis (Part 3 of 5)

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