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


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.


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