Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Optimum Allocation of Sound Absorbing Materials in a Vibroacoustic System using Response Surface Methodology

반응표면법을 이용한 진동-음향 연성계의 흡음재 최적배치

  • Hong, Do-Kwan (Electric Motor Research Center, Korea Electrotechnology Research Institute) ;
  • Baek, Hwang-Soon (System Development Team of Research Lab, WiniaMando Inc.) ;
  • Woo, Byung-Chul (Electric Motor Research Center, Korea Electrotechnology Research Institute) ;
  • Ahn, Chan-Woo (Department of Mechanical Engineering, Dong-A University)
  • 홍도관 (한국전기연구원 전동력연구 센터) ;
  • 백황순 ((주)위니아만도 연구소 시스템 개발팀) ;
  • 우병철 (한국전기연구원 전동력연구 센터) ;
  • 안찬우 (동아대학교 기계공학과)
  • Received : 2011.02.15
  • Accepted : 2011.06.18
  • Published : 2011.10.01
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Abstract

Statistical optimum methodology of table of orthogonal array, ANOM, ANOVA and RSM are applied to formulate optimum allocation design with design variables. It can be minimized average SPL of control volume, the objective function in closed system by optimal allocated positions of absorbing material. Structural natural frequency and acoustic natural frequency of cavity are analyzed by FEM and BEM in the closed system. Using BEM, average SPL of specific control volume is calculated according to the condition before using absorbing material and after using it. It is shown that noise is reduced by $5.02dB_{RMS}$ by absorbing material located at optimal position and minimum $1.83dB_{RMS}$ and maximum $3.47dB_{RMS}$ by the table of orthogonal array.

Keywords

References

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