International Journal of Safety

The Korean Society of Safety (한국안전학회)
권호 표지

Experiment of A Cavity-gap Coupling Model for The Safty and Comfort of A Driving Condition

  • Kang, Sang-Wook (Department of Mechanical Systems Engineering, Hansung University) ;
  • Loh, Byoung-Gook (Department of Mechanical Systems Engineering, Hansung University)
  • Published : 2008.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

For the purpose of controlling the coupling between the car body panels and passenger compartment, experimental investigation of an acoustic cavity with an air gap is carried out to reveal how the air gap influences the acoustic modal characteristics of the cavity. The acoustic modal characteristics of the cavity is closely related with the booming noise. The experimental results show that a very small air gap can change the acoustic modal characteristics of the cavity and, as a result, the air gap can be an important factor in controlling the booming noise for comfortable and safe passenger compartment.

Keywords

References

  1. Lee, S. H., 1998, "Acoustic Mode Control of Structuralacoustic Coupling System using Additional Cavities", Ph. D. Thesis, School of the Mechanical Engineering, Seoul National University.
  2. Sung, S. H., and Nefske, D. J.,1984, "A Coupled Structural- acoustic Finite Element Model for Vehicle Interior Noise Analysis", ASME Transactions, Vol.106, No.2, pp.314-318. https://doi.org/10.1115/1.3260918
  3. Choi, K. K., "Design Sensitivity Analysis of Structureinduced Noise and Vibration," ASME Transactions, Journal of Vibration and Acoustics, Vol. 119(2), pp173-179(1997). https://doi.org/10.1115/1.2889699
  4. Dowell E. H., "Acoustoelasticity: General Theory, Acoustic Natural Modes and Forced Response to Sinusoidal Excitation, including comparisons with Experiments," Journal of Sound and Vibration, Vol. 52(4), pp519-542(1977). https://doi.org/10.1016/0022-460X(77)90368-6
  5. Hagiwara, I. and Ma, Z. D., "Sensitivity Calculation Method for Conducting Modal Frequency Response Analysis of Coupled Acoustic-structural Systems," JSME International Journal Series III, Vol. 35(1) pp14- 21(1992).
  6. Osawa, T. and Iwama, A., "A Study of Vehicle Acoustic Control for Booming Noise Utilizing the Vibration Characteristics of Trunk Lid," SAE861410, pp187- 192(1986).
  7. Raff J. A. and Perry R. D., "A Review of Vehicle Noise Studies Carried out at The Institute of Sound and Vibration Research with a Reference to Some Recent Research on Petrol Engine Noise," Journal of Sound and Vibration, Vol.28(3), pp433-470(1973). https://doi.org/10.1016/S0022-460X(73)80034-3
  8. Kang, S. W., "Three dimensional formulation for interior acoustic field considering the air gap and the headliner," Hansung Journal, Vol. 29, pp1-11(2005).
  9. Kang. S. W. and Lee, J. M., "Sound Absorption Characteristics of Air-gap Systems in Enclosed Cavities," Journal of Sound and Vibration, Vol. 259(1), pp209- 218(2003) https://doi.org/10.1006/jsvi.2002.5074