Structural Engineering and Mechanics

  • 제48권4호
  • /
  • Pages.455-466
  • /
  • 2013
  • /
  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Continous rail absorber design using decay rate calculation in FEM

  • 투고 : 2013.05.18
  • 심사 : 2013.10.25
  • 발행 : 2013.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

In recent years, many countries have added railway noise to the issues covered by noise regulations. It is known that the rail is the dominant source of rolling noise at frequency range of 500Hz-2000Hz for the conventional speeds (<160km/h). One of the effective ways to reduce noise from railway track is using a rail vibration absorber. To study the acoustic performance of rail absorber, the decay rates of vibration have long been used by researcher. In this paper, A FE model of a periodic supported rail with infinite element in ABAQUS is developed to study the acoustic performance of the rail absorber. To compute the decay rates, acceleration responses along the rail transferred to MATLAB to obtain response levels in frequency domain and then by processing the response levels, the decay rates obtained for each1/3octav band. Continous rail absorber is represented by a steel layer and an elastomer layer. The decay rates for conventional rail and rail with one-side absorber and also, the rail with two side absorber are obtained and compared. Then, to improve the system of rail absorber, a steel plate with elastomer layer is added to bottom of the rail foot. The vertical decay rate results show that the decay rate of rail vibration along the track is significantly increased around the tuned frequency of the absorber and thus the rail vibration energy is substantially reduced in the corresponding frequency region and also effective in rail noise reduction.

키워드

참고문헌

  1. Ahmad, N. (2009), "A methodology for developing high damping materials with application to noise reduction of railway track", Ph.D. Dissertation, University of Southampton, Southampton.
  2. Asmussen, B., Stiebe, D., Kitson, P., Farrington, D. and Benton, D. (2008), "Reducing the noise emission by increasing the damping of the rail: results of a field test", Technik/Beschaffung, DB, Systemtechnik, Volckerstr, D-80939 Munchen, Germany.
  3. Brown, G.P. and Byrn, K.P. ( 2005), "Determining the response of infinite, one-dimensional, non-uniform periodic structures by substructuring using wave shape coordinates", Journal of Sound and Vibration, 287(3), 505-523. https://doi.org/10.1016/j.jsv.2004.11.015
  4. Griefahn, B., Marks, A. and Robens, S. (2006), "Noise emitted from road, rail and air traffic and their effects on sleep", Journal of Sound and Vibration, 295, 129-140. https://doi.org/10.1016/j.jsv.2005.12.052
  5. Jones, C.J.C., Thompson, D.J. and Diehl, R.J. (2006), "The use of decay rates to analyse the performance of railway track in rolling noise generation", Journal of Sound and Vibration, 293, 485-495. https://doi.org/10.1016/j.jsv.2005.08.060
  6. Kaboab, E., Nielsenac, J.C.O. and Ekberg, A. (2006), "Prediction of dynamic train-track interaction and subsequent material deterioration in the presence of insulated rail joints", Vehicle System Dynamics, 44, 718-729. https://doi.org/10.1080/00423110600885715
  7. Liu, H.P., Wu, T.X. and Li, Z.G. (2009), "Theoretical modeling and effectiveness study of rail vibration absorber for noise control", Journal of Sound and Vibration, 323, 594-608. https://doi.org/10.1016/j.jsv.2009.01.036
  8. Maes, J. and Sol, H. (2003), "A double tuned rail damper-increased damping at the two first pinned-pinned frequencies", Journal of Sound and Vibration, 267, 721-737. https://doi.org/10.1016/S0022-460X(03)00736-3
  9. Piccioli, B.F. Attenuation of rail vibration: "Analysis of experimental data", Dipartimento di Meccanica e Tecnologie Industriali ? Universita di Firenze v. Santa Marta, 3 - 50139 Firenze.
  10. Thompson, D.J. and Gautier, P.E. (2006), "Review of research into wheel/rail rolling noise reduction", J. Rail and Rapid Transit., DOI: 10.1243/0954409JRRT79.
  11. Thompson, D.J. (2009), Railway noise and vibration: mechanisms, modeling and means, Elsevier Ltd. Oxford, UK.
  12. Thompson, D.J., Jones, C.J.C., Waters, T.P. and Farrington, D. (2007), "A tuned damping device for reducing noise from railway track", Applied Acoustics, 68, 43-57. https://doi.org/10.1016/j.apacoust.2006.05.001
  13. Thompson, D.J. (2008), "A continuous damped vibration absorber to reduce broad-band wave propagation in beams", Journal of Sound and Vibration, 311, 824-842. https://doi.org/10.1016/j.jsv.2007.09.038
  14. Thompson, D.J. and Jones, C.J.C. (2000), "A review of the modelling of wheel/rail noise generation", Journal of Sound and Vibration, 231(3), 519-536. https://doi.org/10.1006/jsvi.1999.2542
  15. Toward, M. and Thompson, D.J. (2012), "Laboratory methods for testing the performance of acoustic rail dampers", Proceedings of the Acoustics 2012 Nantes Conference, April.
  16. Wu, T.X. and Liu, H.P. (2009), "Reducing the rail component of rolling noise by vibration absorber: theoretical prediction", Proc. IMechE Vol. 223 Part F: J. Rail and Rapid Transit, DOI: 10.1243/09544097JRRT263.

피인용 문헌

  1. Laboratory test and FEM analysis on a developed continuous rail absorber (CRA) vol.30, pp.3, 2016, https://doi.org/10.1007/s12206-016-0207-5
  2. New Transition Wedge Design Composed by Prefabricated Reinforced Concrete Slabs vol.13, pp.8, 2016, https://doi.org/10.1590/1679-78252556
  3. Development of optimum modeling approach in prediction of wheelflats effects on railway forces vol.69, pp.5, 2013, https://doi.org/10.12989/sem.2019.69.5.499