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ZHANG Jian, WANG Yu-yan, JIN Xue-song, CUI Da-bin. Geometric design method of wheel profile for improving wheel and rail contact status[J]. Journal of Traffic and Transportation Engineering, 2011, 11(1): 36-42. doi: 10.19818/j.cnki.1671-1637.2011.01.007
Citation: ZHANG Jian, WANG Yu-yan, JIN Xue-song, CUI Da-bin. Geometric design method of wheel profile for improving wheel and rail contact status[J]. Journal of Traffic and Transportation Engineering, 2011, 11(1): 36-42. doi: 10.19818/j.cnki.1671-1637.2011.01.007
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Geometric design method of wheel profile for improving wheel and rail contact status

doi: 10.19818/j.cnki.1671-1637.2011.01.007
  • 1.

    Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

  • 2.

    School of Traffic and Transportation Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China

More Information
  • Author Bio:

    ZHANG Jian(1968-), male, associate professor, doctoral student, +86-411-84106938, zhangjian@djtu.edu.cn

    JIN Xue-song (1956-), male, professor, PhD, +86-28-87634355, xsjin@home.swjtu.edu.cn

  • Received Date: 2010-08-18
  • Publish Date: 2011-02-25
    Abstract
  • The geometric design method of wheel profile was improved, its analytic mathematic expressions were presented, which connected wheelset equivalent conicity and wheel and rail contact status. The wheel and rail contact geometry, non-Hertzian rolling contact and vehicle dynamics performance of design example were calculated. Analysis result indicates that wheel and rail geometric contact points become homodisperse. Due to contact patch area increases by about 23%, the maximum contact pressure decreases by about 21%, wheel and rail rolling contact stress decreases by 20% approximately. Vehicle equipped with the example profile has nearly the same critical speed with LMA wheel profile, and because wheelset equivalent conicity has a little bit increase, the example profile exhibites better curving performance than the latter. So the method can improve wheel and rail contact status, which is beneficial to wheel and rail wear spreading, and is helpful to mitigate wheel and rail rolling contact fatigue.

     

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    • References(24)
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