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Modelling and Performance Analysis of Rail Vibration Absorber by FE and BE Methods

  • H. P. Liu
  • T. X. Wu
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 118)

Summary

A finite element model of the railway track with a rail absorber is proposed for investigating the effects of the absorber’s multiple motions on the dynamic behavior of the track. The rail vibration and radiation due to a roughness excitation are calculated with the use of the absorber. The calculation results are compared with those of the beam-spring model. The results show that the radiation efficiency of the rail with the absorber is significantly reduced in the frequency range 300-1000 Hz. The noise reduction calculated by the finite element model is less than that of the beam-spring model in the frequency region of 400-—1000 Hz due to the transversal rotation of the absorber. The rail-radiated noise can be reduced by about 7.1 dB(A) using the rail absorber.

Keywords

Finite Element Model Vibration Energy Vertical Vibration Radiation Efficiency Railway Track 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    Thompson, D.J., Jones, C.J.C., Waters, T.P., et al.: A tuned damping device for reducing noise from railway track. Applied Acoustics 68, 43–57 (2007)CrossRefGoogle Scholar
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Copyright information

© Springer 2012

Authors and Affiliations

  • H. P. Liu
    • 1
  • T. X. Wu
    • 1
  1. 1.State Key Laboratory of Mechanical System and VibrationShanghai Jiao Tong UniversityP R China

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