Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on the Analysis and Improvement of the Acoustic Characteristics of the Muffler with Complex Geometry

복잡한 형상의 머플러 음향특성 해석 및 개선에 관한 연구

  • 오상경 (삼성전자, 기술총괄 기반기술센터) ;
  • 모진용 (삼성전자, 기술총괄 기반기술센터) ;
  • 허만선 (삼성전자, 기술총괄 기반기술센터)
  • Published : 1996.12.01
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Abstract

An acoustic transmission loss analysis method for mufflers with complex geometry is developed using MSC/NASTRAN on the basis of acoustic-structural analogy and two-microphone method. In this study, mufflers with simple and complex shapes are analyzed using this method and compared with theoretical and experimental results to verify it. Applying this method to design of discharge muffler in a rotary compressor, we obtained 2dB(A) of noise reduction in the range of lower than 1300Hz. Futhermore, adopting this technique for a suction muffler in reciprocal compressor, more than 10dB(A) noise reduction at 500Hz, and in total, 3dB(A) noise reduction is achieved.

Keywords

References

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  2. J. Acoust Soc. Am. v.57 no.1 Prediction of Transmission Loss in Muffler by the Finite-Element Method Cheng-I James Young;Malcolm J. Crocker
  3. Acoustics of Ducts and Mufflers M. L. Munjal
  4. J. Acoust, Soc., Am. v.83 Two-Sensor Methods for the Measurements of Sound intensity and Acoustical Properties in Duct A.F. Seybert
  5. 한국소음진동학회 추계학술대회 논문집 두 개의 음향탐촉자를 이용한 소음기의 투과손실 측정과 오차 해석 김양한;강성우
  6. MSC/NASTRAN Handbook for Dynamic Analysis, (Version 63) the MSC
  7. MSC/NASTRAN Dynamics Seminar Notes the MSC