• 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 55 Issue 6
Dec.  2020
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Article Contents
KANG Xi, CHEN Guangxiong, LÜ Jinzhou, ZHAO Xiaonan, WU Bowen, ZHU Qi. Similarity of Small-Scale Wheelset-Track Model for Investigation of Rail Corrugation[J]. Journal of Southwest Jiaotong University, 2020, 55(6): 1320-1327. doi: 10.3969/j.issn.0258-2724.20180898
Citation: KANG Xi, CHEN Guangxiong, LÜ Jinzhou, ZHAO Xiaonan, WU Bowen, ZHU Qi. Similarity of Small-Scale Wheelset-Track Model for Investigation of Rail Corrugation[J]. Journal of Southwest Jiaotong University, 2020, 55(6): 1320-1327. doi: 10.3969/j.issn.0258-2724.20180898

Similarity of Small-Scale Wheelset-Track Model for Investigation of Rail Corrugation

doi: 10.3969/j.issn.0258-2724.20180898
  • Received Date: 12 Nov 2018
  • Rev Recd Date: 08 May 2019
  • Available Online: 18 Aug 2020
  • Publish Date: 15 Dec 2020
  • In order to study rail corrugation on sharp metro curved tracks, based on the theory that the friction-induced vibration causes rail corrugation, the similarity between a full-scale and a small-scale wheelset-track models was studied. Firstly, to determine if the wheel-rail creep force was saturated, 1∶1 and 1∶5 dynamics models of vehicle-track system were established, respectively. Curve negotiations of these two models were simulated. Secondly, two finite element models were established whose wheel-rail contact parameters were from the dynamic simulation. Finally, using the complex eigenvalue analysis studied the stability of each wheelset-track system.The results show that when 1∶1 and 1∶5 vehicle models negotiate the sharp curved line respectively, creep forces on the inner and outer wheels of leading wheelsets are approximately saturated. Deviations of the vertical suspension force on two axle-ends of the wheelset and the wheel-rail contact angle are less than 3% and 5%, respectively. Frequency deviations of all similar unstable vibration modes are lower than 3%. The small-scale wheelset-track model has good similarity with full-scale model in the dynamic performance and the stability; therefore, the small-scale model can be used to study the formation mechanism of rail corrugation, both theoretically and experimentally.

     

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