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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Numerical Analysis of Transmission Loss Prediction in High Speed Trains

전산해석을 이용한 동력 분산형 고속철도차량의 투과손실 예측

  • 김태민 (홍익대학교 기계공학) ;
  • 김정태 (홍익대학교 기계시스템디자인공학과) ;
  • 김정수 (홍익대학교 기계시스템디자인공학과) ;
  • 김수영 (홍익대학교 기계시스템디자인공학과)
  • Received : 2010.04.06
  • Accepted : 2010.08.02
  • Published : 2010.08.20
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Abstract

An analysis tool for predicting transmission loss in high speed trains based on combined use of the statistical energy analysis and the finite element methods has been proposed. The analysis utilizes a commercially available numerical solver VA ONE with imbedded NASTRAN module. The proposed analysis tool is first verified by comparing numerically predicted transmission loss of a light rail transport(LRT) structure with experimental results. The comparison shows that the numerically predicted transmission loss is similar to the experimental data. The analysis tool is then applied to the prediction of transmission loss in the high speed train(HST) currently under development. Various sub-structures such as the floor, side panel and ceiling have been numerically analyzed to predict their transmission losses. The results obtained here can be used as input data for predicting the interior noise level of the HST at design stage.

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References

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