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Analysis of Rail Wear Rate according to Wheel/Rail Contact Pressure on Curved Track

곡선부 차륜/레일 접촉압력에 따른 레일마모진전 경향 분석

  • Sung, Deok-Yong (Department of Civil & Railroad Engineering, Daewon University College)
  • Received : 2017.01.02
  • Accepted : 2017.06.21
  • Published : 2017.08.31

Abstract

On a typical railway, trains travel using the friction between the wheel and the rail. Contact pressure is generated between the wheel and the rail, and the magnitude of the contact pressure changes depending on the weight, speed, wheel-set hunting, and contact point of the vehicle. In this study, the contact characteristics were analyzed through the finite element analysis for the wheel/rail system on curved track, and fatigue damage and wear rate of wheel/rail according to contact pressure were analyzed through rolling contact fatigue test. Results indicate that, general and heat treated rails showed higher wear rate than wheels, and general and heat treated rail wear rate increased rapidly over a certain number of repetitions. In addition, the general rail wear rate was about 7 ~ 15% higher than that of the heat treated rail, and a regression equation for the rail wear rate with the contact pressure in the contact pressure range of 900 ~ 1,500 MPa was presented.

References

  1. C. Esveld (2001) Modern railway track (2nd edition), MRT-Productions, the Netherlands, pp.23-33, pp.71-90.
  2. J. F. Archard (1953) Contact and rubbing of flat surface, Journal of Applied Physics, 24(8), pp. 981-988. https://doi.org/10.1063/1.1721448
  3. Innotrack (2009) Rail degradation algorithms, Innotrack D4.1.4, TIP5-CT-2006-0314150.
  4. R. Popovici (2010) Friction in wheel-rail contacts, PhD Thesis, University of Twente, Enschede, The Netherlands.
  5. D. Y. Sung, K. S. Chang, Y. G. Park (2012) Analysis for optimal rail grinding amount by rolling contact fatigue test in high speed railway, Journal of the Korean Society for Railway, 15(2), pp. 141-146. https://doi.org/10.7782/JKSR.2012.15.2.141
  6. H. Y. Choi, D. H. Lee, W. H. You, J. S. Lee (2010) Wheel-rail contact analysis considering the deformation of wheel and Axle, Journal of the Korean Society of Precision Engineering, 27(8), pp.20-27.
  7. J. H. Beynon, J. E. Garnham, K. J. Sawley (1996) Rolling contact fatigue of three pearlitic rail steels, Journal of the Wear, 192(1-2), pp. 94-111. https://doi.org/10.1016/0043-1648(95)06776-0
  8. B. Lichtberger (2005) Track Compendium, Eurail press, Hamburg, pp.120-122.
  9. Y. G. Park (2011) Development of track system for high-speed train, Korea Agency for Infrastructure Technology Advancement.
  10. D. Y. Sung, D. C. Go, Y. G. Park, S. Y. Kong (2010) Experimental study for establishing rail grinding period in the urban railway, Journal of the Korean Society for Railway, 13(4), pp. 447-454.

Cited by

  1. Fatigue life evaluation of continuous welded rails on concrete slab track in Korea high-speed railway vol.21, pp.13, 2018, https://doi.org/10.1177/1369433218762501