A Study on the Reduction of Booming Noise of an Automobile

승용차의 부밍 소음 저감에 관한 연구

  • 이상현 (서울대학교 대학원 기계설계학과) ;
  • 강상욱 (서울대학교 대학원 기계설계학) ;
  • 최형길 (서울대학교 대학원 기계설계학) ;
  • 이장무 (서울대학교 기계설계학) ;
  • 성명호 (현대자동차)
  • Published : 1996.11.01

Abstract

Recently many studies have been carried out to predict the characteristics of vehicle noise and to reduce the noise for enhancing the ride quality. In this study, the structural-acoustic coupling theory and the acoustic finite element theory were reviewed, and the structural acoustic coupling analysis was applied to an automobile. Because of nonuniformed lateral shape of a compartment cavity, the acoustic modes were calculated with 3-D finite element modeling. The structural modes were measured with the modal testing. Using the structural-acoustic cooling analysis, the modes which strongly coupled to the interior noise were identified and the boundary regions which could reduce noise level efficiently by structural modification were predicted.

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