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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Structural Modification for the Reduction of Radiation Noise of a Powertrain Based on CAE Technology

CAE를 이용한 파워트레인의 방사소음 저감을 위한 구조변경

  • 송민근 (인하대학교 대학원 기계공학과) ;
  • 오기석 (인하대학교 대학원 기계공학과) ;
  • 이상권 (인하대학교 기계공학과)
  • Published : 2008.04.20
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Abstract

One of the key elements in efforts to minimize noise radiation from a powertrain is the knowledge of the main radiating component and the relation between the surface vibration of a powertrain and the sound pressure. In this research, the powertrain model is developed based on FEM(finite element method). This model is applied to the prediction of the vibration of a powertrain by using ADAMS and the radiation noise by using BEM(boundary element method). According to this numerical analysis, the surface vibration of a powertrain is investigated as a source of radiated noise. This surface vibration is caused by the 1st order natural vibration of the cylinder block and its mode shape is the torsion mode. Therefore, this mode shape is modified to reduce the surface vibration of the powertrain. The radiation noise of the modified powertrain is also reduced to $5{\sim}12\;dB$. This modification is very successful for the noise reduction based on the CAE technology.

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References

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  1. Analysis of Influence of Oil Pan Structure Modification on Radiation Noise of an Engine Using FEM vol.25, pp.5, 2017, https://doi.org/10.7467/KSAE.2017.25.5.573