Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

An Experimental Study on The Coupling Path and Acoustic Modal Characteristics of a Coupled System of Passenger Compartment and Trunk

차실-트렁크 연성계의 연성경로 및 음향모드 특성에 관한 실험적 연구

  • Lee, Jin-U (Dept.of Mechanical Aerospace Engineering, Graduate School of Seoul National University) ;
  • Kim, Gyu-Beom (Dept.of Mechanical Aerospace Engineering, Graduate School of Seoul National University) ;
  • Lee, Jang-Mu (Dept.of Mechanical Aerospace Engineering, Seoul National University) ;
  • Kim, Seok-Hyeon (Dept.of Machanics mechatronics Engineering, Engineering College, Kangwon National University) ;
  • Park, Dong-Cheol
  • 이진우 (서울대학교 대학원 기계항공공학부) ;
  • 김규범 (서울대학교 대학원 기계항공공학부) ;
  • 이장무 (서울대학교 기계항공공학부) ;
  • 김석현 (강원대학교 기계메카트로닉스공학부) ;
  • 박동철
  • Published : 2001.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study identifies the major coupling path by examining the variation of the coupled acoustic modal frequencies and modes. A 1/2-size acryl compartment model is designed and manufactured for the measurement and analysis of coupled acoustic modes. Due to acoustic coupling, a new acoustic mode appears in a low frequency range. This coupling affects only longitudinal acoustic modes of compartment. Experimental result shows that the package tray holes contribute to the coupling much more than the back seat and hole size is an important design factor to control low frequency acoustic modes in the coupled system.

Keywords

References

  1. Sung, S. H. and Nefske, D. J., 1984, 'A Coupled Structural-Acoustic Finite Element Model for Vehicle Interior Noise Analysis,' ASME Transactions Journal of Vibration, Acoustics, Stress and Reliability, Vol. 106, pp. 314-318
  2. Suzuki, S., 1990, 'Boundary Element Method for Vehicle Noise Problems,' Winter Annual Meeting of ASME, NCA-Vol. 9, pp. 17-24
  3. John, C. Gagilardi, 1997, 'Correlation of Various Test Methodologies with Vehicle Seat Acoustical Performance,' SAE Paper 971927
  4. Kim, S. H. and Lee, J. M., 1998, 'A Practical Method for Noise Reduction in a Vehicle Passenger Compartment,' ASME Trans. Journal of Vibration and Acoustics, Vol. 120, pp. 199-205
  5. Kim, S. H., Lee, J. M. and Sung, M. H., 1999, 'Structural-acoustic Modal Coupling Analysis and Application to Noise Reduction in a Vehicle Passenger Compartment,' Journal of Sound and Vibration, Vol. 225 (5), pp. 989-999 https://doi.org/10.1006/jsvi.1999.2217
  6. Kang, S. W., Lee, J. M. and Kim, S. H., 2000, 'Structural Acoustic Coupling Analysis on the Vehicle Passenger Compartment with the Roof-air gap-trim Boundary,' ASME Trans. Journal of Vibration and Acoustics, Vol. 122 (3), pp. 196-202 https://doi.org/10.1115/1.1302984
  7. Tatsuo Osawa and Akinon Iwama, 1986, 'A Study of the Vehicle Acoustic Control for Booming Noise Utilizing the Vibration Characteristics of Trunk Lid,' SAE 861410
  8. Yang Qian and Jeff VanBuskirk, 1997, 'Acoustic Modeling and Optimization of Seat for Boom Noise, SAE 971950
  9. 김규범, 이진우, 이장무, 김석현, 박동철, 2000, '차실-트렁크 연성계의 연성경로 및 음향모드 특성에 관한 실험적 연구,' 대한기계학회 2000년 추계학술대회논문집, pp. 607-611