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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Characteristics of Vibration and Sound Radiated from Rails of Concrete Slab Tracks for Domestic High Speed Trains

국내 고속 철도 콘크리트 슬라브 궤도의 진동 및 방사 소음 해석

  • Ryue, Jungsoo (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Jang, Seungho (Echo-Rail Research Division, Korea Railroad Research Institute)
  • Received : 2013.03.07
  • Accepted : 2013.05.20
  • Published : 2013.07.20
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Abstract

An important source of noise from railways is rolling noise caused by wheel and rail vibrations induced by acoustic roughness at the wheel-rail contact. In the present paper, characteristics of rail vibration and radiated sound power from concrete slab tracks for domestic high speed train(KTX) is investigated by means of a numerical method. The waveguide finite element and boundary element are combined and applied for this analysis. The concrete slab track is modelled simply with a rail and rail pad regarding the concrete slab as a rigid ground. The wave types which contribute significantly to the rail vibration and radiated noise are identified in terms of the mobility and decay rates. In addition, the effect of the rail pad stiffness on the radiated power is examined for two different rail pad stiffnesses.

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References

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