Structural-Acoustic Coupling Analysis of the Vehicle Passenger Compartment with the Roof, Air-Gap, and Trim Boundary-Reference-Cited by-同舟云学术

Structural-Acoustic Coupling Analysis of the Vehicle Passenger Compartment with the Roof, Air-Gap, and Trim Boundary

Published:1999-12-01 Issue:3 Volume:122 Page:196-202
ISSN:1048-9002
Container-title:Journal of Vibration and Acoustics
language:en
Short-container-title:

Author:

Kang Sang Wook¹,Lee Jang Moo²,Kim Seock Hyun³

Affiliation:

1. R&D Team, Living Appliances Division, Samsung Electronics Company, Suwon 442-742 Kyungki Do, Korea

2. Department of Mechanical Design and Production Engineering, Seoul National University, San 56-1 Shinlim-Dong, Kwanak-Ku, Seoul 151-742, Korea

3. Department of Precision Mechanical Engineering, Kangwon National University, Chunchon 200-701, Kangwon Do, Korea

Abstract

A theoretical model is made to investigate the coupling effects of the trim and air gap on the frequency response characteristics of a passenger compartment. With the model, a parametric study is carried out to understand the relation between the acoustic response of the cavity and the design variables associated with the roof, trim, and air gap between the two. The validity of theoretical formulations is verified through a comparison between the theoretical results and the finite element analysis results. Finally, an experiment for a simplified compartment cavity model is performed to confirm the theoretical results. This study reveals that the resonance peak level of an acoustic mode, which has a nodal surface parallel to the trim, can be significantly reduced by properly designing the trim mass and the gap thickness of the trim-air gap system. [S0739-3717(00)00303-2]

Publisher

ASME International

Subject

General Engineering

Link

http://asmedigitalcollection.asme.org/vibrationacoustics/article-pdf/122/3/196/5826272/196_1.pdf

Reference11 articles.

1. Sung, S. H., and Nefske, D. J., 1984, “A Coupled Structural-acoustic Finite Element Model for Vehicle Interior Noise Analysis,” ASME Trans., 106, No. 2, pp. 314–318.

2. Yashiro, H., et al., 1985, “An Application of Structural-Acoustic Analysis to Car Body Structure,” SAE850961.

3. Suzuki, S., et al., 1990, “Coupling of Boundary Element Method for Vehicle Noise Problems,” JSME, NCA, 9, pp. 17–24.

4. Hagiwara, I., and Ma, Z. D., 1992, “Sensitivity Calculation Method for Conducting Modal Frequency Response Analysis of Coupled Acoustic-Structural Systems,” JSME Int. J., Ser. III, 35, No. 1, pp. 14–21.

5. Choi, K. K., and et al., 1997, “Design Sensitivity Analysis of Structure-induced Noise and Vibration,” ASME J. Vibr. Acoust., 119, No. 2, pp. 173–179.

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