한국철도학회논문집 (Journal of the Korean Society for Railway)

  • 제17권1호
  • /
  • Pages.14-18
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  • 2014
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  • 1738-6225(pISSN)
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  • 2288-2235(eISSN)
한국철도학회 (The Korean Society for Railway)
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마찰과 토크를 고려한 차륜/레일 접촉 해석

Wheel/Rail Contact Analysis with Consideration of Friction and Torque

  • 투고 : 2013.06.25
  • 심사 : 2013.12.13
  • 발행 : 2014.02.28
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초록

차륜/레일 접촉은 철도차량의 동특성을 결정하는 중요한 요소이다. 본 연구에서는 철도 차륜과 레일 사이에 작용하는 토크에 의한 견인력과 마찰력을 두 원통의 접촉문제로 이론해석과 전산해석을 하고 수직하중과 전단력이 작용하는 실제 차륜과 레일에 대한 전산해석을 하였다. 철도차륜과 레일 접촉문제는 구름과 미끄러짐이 있는 탄성접촉인 크리프에 의한 크리프힘을 생성하는 과정으로서 차륜과 레일의 형상 및 마찰계수에 따라 달라짐을 알 수 있었다.

Wheel/rail contact is a significant problem in railway dynamics. In this paper, the wheel/rail contact is examined analytically and numerically as a contact problem between two cylinders where torque and friction have effect. Furthermore, the contact of a real wheel and rail is investigated numerically where the normal and shear force act. This study demonstrates that the wheel/rail contact is a process that generates traction force through creep where rolling and sliding occurs simultaneously depending on the shape of the wheel and rail, and the friction coefficient between them.

키워드

참고문헌

  1. F.W. Carter (1926) On the action of a locomotive driving wheel, Proc. R. Soc, London. A, 112, pp. 151-157. https://doi.org/10.1098/rspa.1926.0100
  2. J.J. Kalker (1991) Wheel-rail rolling contact theory, Wear, 144, pp. 243-261. https://doi.org/10.1016/0043-1648(91)90018-P
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  4. A.A. Shabana, K.E. Zaazaa, J.L. Escalona, J.R. Sany (2004) Development of elastic force model for wheel/rail contact problem, Journal of Sound and Vibration, 269, pp. 295-325. https://doi.org/10.1016/S0022-460X(03)00074-9
  5. E.E. Magel, J. Kalousek (2002) The application of contact mechanics to rail profile design and rail grinding, Wear, 253(1-2), pp. 308-316. https://doi.org/10.1016/S0043-1648(02)00123-0
  6. K.D. Sung, W.H. Yang, M.R. Cho, S.P. Heo, K.H. Jung (1998) A study on the contact characteristics of wheel-rail for rolling stock, Journal of the Korean Society of Mechanical Engineers, Vol. 2, No. 1, pp. 268-273.
  7. H.S. Yang, W.S. Lee, H.K. Nam (2005) Study on wheel profile for railway vehicle with narrow gauge by profile contact analysis, Proceedings of the Korean Society for Railway Annual Autumn Conference, pp. 59-64.
  8. Popov, Valentin L. (2010) Contact mechanics and friction : physical principles and applications, Springer, Berlin, Germany, pp. 72-75.
  9. SAMCEF. 8.3 (2010).

피인용 문헌

  1. Dynamic Analysis of Railway Structures using Multibody Contacts vol.15, pp.6, 2015, https://doi.org/10.9798/KOSHAM.2015.15.6.293
  2. Study on MFL Technology for Defect Detection of Railroad Track Under Speed-up Condition vol.18, pp.5, 2015, https://doi.org/10.7782/JKSR.2015.18.5.401