Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Forced Acoustic Response Analysis of an Acoustic Cavity with a Double Air-gap Resonator for Reducing Passenger Compartment Noises

차실 소음 저감을 위한 복층 에어갭 공명기가 설치된 음향 공동의 강제 음향 응답 해석

  • Kang, Sang-Wook (Department of Mechanical Systems Engineering, Hansung University)
  • 강상욱 (한성대학교 기계시스템공학과)
  • Published : 2005.11.01
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Abstract

A theoretical formulation on the forced acoustic response of an enclosed cavity having a double air-gap resonator on one of boundary panels of the cavity is developed in the paper. The double gap resonator consists of two air-gaps and two partition sheets as in the author's previous papers. This paper reveals that the double gap resonator reduces the level of a target noise peak by splitting the peak as two small peaks, and that it is more effective when it is designed so that the upper gap thickness is larger than the lower gap thickness under the constraint that the entire gap thickness is fixed as a constant value. Finally, verification experiments show that the theoretical formulation and analysis results are valid by comparing theoretical results with experimental ones.

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References

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