Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on Transmission Loss Characteristics of Honeycomb Structure

허니콤 구조물의 차음특성에 관한 연구

  • 김운경 (홍익대학교 대학원 기계공학과) ;
  • 김정태 (홍익대학교 기계공학과) ;
  • 김관주 (홍익대학교 기계공학과) ;
  • 김석현 (강원대학교 기계공학과)
  • Published : 2003.01.01
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Abstract

As a test specimen. an aluminum extruded panel with a dimension of 640 mm$\times$740 mm$\times$40mm is considered. This plate has 9 mm thickness if mass is concerned. Based on the FEM modeling in rigidity. the specimen turns out to be 32 mm and 12 mm thickness In isotropic steel plate. Also, the characteristics of transmission loss on the honeycomb structure have been examined experimentally with reverberation chamber. A honeycomb structure follows mass law in above 800 Hz. In order to improve the noise transmission effect in lower frequency, extra damping treatment is suggested. As a conclusion. the examined honeycomb structure Is designed to Improve the bending rigidity, not for the noise reduction.

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References

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