Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A 3-dimensional Wheel-rail Contact Analysis of Railway Vehicle with 2-point Contacts

2점 접촉을 고려한 철도차량의 3차원 휠-레일 접촉해석

  • Kang, Ju-Seok (Department of Rolling Stock Mechanical Engineering, Korea National Railroad College)
  • 강주석 (한국철도대학 철도차량기계과)
  • Received : 2009.06.02
  • Accepted : 2009.11.13
  • Published : 2010.05.01
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Abstract

In this study, the shapes of the wheel and rail are represented by using 3-dimensional surface functions with surface parameters and a 3-dimensional wheel-rail contact analysis is presented. A whole numerical solution of wheel-rail contact at tread and flange including 2-point contacts can be achieved with the proposed numerical algorithm. Kinematic characteristics such as variances of vertical displacement and roll angle, and variance of wheel radius difference for arbitrary yaw and lateral displacement of wheelset, are determined for the KTX wheel-rail pair as an example. The condition of yaw and lateral displacement occurring 2-point contacts to analyze derailment are compared between standard and worn wheels. Differences of contact characteristics between curved and straight rails are also analyzed.

Keywords

References

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