Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Influence of the Speeds on the Curve Squeal Noise of Railway Vehicles

철도차량의 곡선부 스킬 소음에 대한 속도의 영향

  • Lee, Chan-Woo (Vehicle-Track Research Department, Korea Railroad Research Institute) ;
  • Kim, Jae-Chul (Vehicle-Track Research Department, Korea Railroad Research Institute)
  • 이찬우 (한국철도기술연구원 차륜궤도연구실) ;
  • 김재철 (한국철도기술연구원 차륜궤도연구실)
  • Received : 2011.03.24
  • Accepted : 2011.04.05
  • Published : 2011.05.01
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Abstract

Curve squealing of inter-city railway vehicle is a noise with high acoustic pressure and rather narrow frequency spectra. This noise turns out to be very annoying for the people living in the neighborhood of locations and the passenger in railway vehicle where this phenomenon occurs. Squealing is caused by a self-exited stick-slip oscillation in the wheel-rail contact. Curve squeal noise of railway vehicles that passed by a factor of the speed limit, so to overcome in order to improve running performance is one of the largest technology. In the present paper, characteristic of squeal noise behavior at the Hanvit-200 tilting train test-site. Curve squealing of railway wheels/rail contact occurs in R400~ R800 curves with a frequency range of about 4~11 kHz. If the curve is less than the radius of wheel frail contact due to |left-right| noise level difference (dBA) shows a significant effect of squeal noise were more likely.

Keywords

References

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