• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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Volume 28 Issue 6
Dec.  2015
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Article Contents
Journal of Southwest Jiaotong University  > 2015  >  28(6): 1074-1081.
XIONG Jiayang, CAO Yabo, WU Lei, DU Xing, XIAO Xinbiao, JIN Xuesong. Effect of Longitudinal Geometric Irregularities of Wheel and Rail on Dynamic Behavior of Metro Vehicle Driven by Linear Motor[J]. Journal of Southwest Jiaotong University, 2015, 28(6): 1074-1081. doi: 10.3969/j.issn.0258-2724.2015.06.014
Citation: XIONG Jiayang, CAO Yabo, WU Lei, DU Xing, XIAO Xinbiao, JIN Xuesong. Effect of Longitudinal Geometric Irregularities of Wheel and Rail on Dynamic Behavior of Metro Vehicle Driven by Linear Motor[J]. Journal of Southwest Jiaotong University, 2015, 28(6): 1074-1081. doi: 10.3969/j.issn.0258-2724.2015.06.014
shu

Effect of Longitudinal Geometric Irregularities of Wheel and Rail on Dynamic Behavior of Metro Vehicle Driven by Linear Motor

doi: 10.3969/j.issn.0258-2724.2015.06.014
  • Received Date: 06 Jun 2014
  • Publish Date: 25 Dec 2015
    Abstract
  • A metro vehicle-track coupling dynamic model was established to investigate the effect of geometric irregularities of wheel and rail on the dynamic behavior of linear motor vehicles, which was based on the vehicle-track coupling theory and took the linear induction motor subsystem into account. Through this model, the effect of geometric irregularities, including out-of-round wheel profiles, rail welding joints and rail corrugations, on the vehicle dynamic responses, wheel-rail forces and carbody stability were studied. The results indicates that long wavelength (more than 1 m) irregularities would change the air gap and short wavelength (less than 1 m) ones would cause fierce wheel-rail impact vibration. In addition, it should be noted especially that welding joints could cause a 1.5 times wheel-rail force increase, a 2-3 mm air gap decrease, and even wheel-rail separation.

     

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