International Journal of Safety

The Korean Society of Safety (한국안전학회)
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Study on Coupled Resonance Frequencies and Acoustic Responses in a 3-D Acoustic Cavity with the Air-gap for Safer Driving Condition

  • Kang, Sang-Wook (Department of Mechanical Systems Engineering, Hansung University)
  • Published : 2006.06.30
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Abstract

An investigation was carried out to determine the effect of the thickness of the air-gap installed between the roof metal sheet and the headliner on booming noise in passenger cars. In addition, a way of offering quieter driving condition to drivers and passengers was studied. It was found that a very thin air-gap corresponding to approximately 3/100 of the height of the passenger compartment causes noticeable change in the coupled resonance frequencies and acoustic responses. Furthermore, a guideline is proposed for determining an optimal air-gap thickness during design stage of the air-gap beneath the roof metal sheet for reducing booming noise.

Keywords

References

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