• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 27 Issue 4
Jul.  2014
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Article Contents
WANG Yijia, ZENG Jing, GAO hao, LUO Ren. Analysis of Wheel/Rail Impact Induced by Wheel Flats[J]. Journal of Southwest Jiaotong University, 2014, 27(4): 700-705. doi: 10.3969/j.issn.0258-2724.2014.04.022
Citation: WANG Yijia, ZENG Jing, GAO hao, LUO Ren. Analysis of Wheel/Rail Impact Induced by Wheel Flats[J]. Journal of Southwest Jiaotong University, 2014, 27(4): 700-705. doi: 10.3969/j.issn.0258-2724.2014.04.022

Analysis of Wheel/Rail Impact Induced by Wheel Flats

doi: 10.3969/j.issn.0258-2724.2014.04.022
  • Received Date: 10 Dec 2012
  • Publish Date: 25 Aug 2014
  • In order to study the dynamic issues induced by wheel flats for high speed trains, a dynamic model and new/worn wheel flat models were developed using the multi-body theory and the equivalent track excitation method. The simulation method considering the change of wheel radius was applied to simulate the wheel flat and analyze the wheel/rail impact caused by wheel flats. The results show that the behaviors of wheel-rail impact forces caused by new and worn wheel flats are different: the impact force caused by a worn flat increases with the train speed increasing, and is significantly larger than that by a new flat at high speeds. When the running speed of the train is larger than 200 and 250 km/h, the length of the wheel flat should be limited within 35 and 30 mm, respectively.

     

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