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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Acoustic Control of Optional Space Using Optimum Location of Absorbing Material

흡음재 최적배치를 이용한 임의 공간의 음향제어에 관한 연구

  • 김동영 (동아대학교 대학원 기계공학과) ;
  • 홍도관 (동아대학교 생산기술연구소) ;
  • 안찬우 (동아대학교 기계공학과)
  • Published : 2004.10.01
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Abstract

The Passive acoustic control is used in various fields, such as structures, automobiles, aircraft and so on. It is used in variety of acoustic field with the absorbing material, as one of the methods which can control the acoustic in optional space. In that case of passive control using this absorption material, it would be important to maximize the control performance of material property, numbers, geometry shape and the attached location of boundary area of the absorbing material. But realistically these variables, specially material Property, have no broad choice. Therefore, the position of absorbing material is the most important variable. In this study, we use the optimization method to minimize acoustic energy of optional space in the interest frequency attaching some absorbing materials to the boundary area. For analysis and optimization, this study uses the FEA and the conjugate gradient method. This optimization process is very efficient and useful in the passive acoustic control.

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References

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