Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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An Engine Structure-Borne Noise Analysis by Finite Element Method

유한요소법에 의한엔진 구조소음 해석

  • 안상호 (아시아자동차 서울연구소 엔진개발부) ;
  • 김주연 (정회원, 아시아자동차 서울연구소 엔진개발부) ;
  • 김규철 (아시아자동차 서울연구소 엔진개발부)
  • Published : 1998.01.01
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Abstract

This paper presents the static analysis, the modal analysis and the forced vibration analysis on engine structures to find out the structure-borne noise sources by finite element method. The deformation of engine structures under the maximum combu- stion gas force was calculated through the static analysis, and the resonance possibilities were predicted by the modal analysis which ascertains mode shapes and the corresponding frequencies of engine global and its major noise sources in engine surfaces were investigated with the forced vibration analysis by means of finding the transfer mobilities on engine surfaces due to the piston impact and the velocity levels due to the combustion in consideration of oil film stiffness and damping coefficients. Finally, the direction of engine structure-borne noise reduction can be estabilished by the above-mentioned analysis procedure and the reduction effect of cost on proto-type engine build-up is expected.

Keywords

References

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