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Volume 56 Issue 1
Jan.  2021
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Journal of Southwest Jiaotong University  > 2021  >  56(1): 68-74.
CUI Xiaolu, HUANG Bo, CHEN Guangxiong. Research on Multi-Parameter Fitting of Fastener Structures to Suppress Wheel-Rail Friction Self-Excited Vibration[J]. Journal of Southwest Jiaotong University, 2021, 56(1): 68-74. doi: 10.3969/j.issn.0258-2724.20190023
Citation: CUI Xiaolu, HUANG Bo, CHEN Guangxiong. Research on Multi-Parameter Fitting of Fastener Structures to Suppress Wheel-Rail Friction Self-Excited Vibration[J]. Journal of Southwest Jiaotong University, 2021, 56(1): 68-74. doi: 10.3969/j.issn.0258-2724.20190023
shu

Research on Multi-Parameter Fitting of Fastener Structures to Suppress Wheel-Rail Friction Self-Excited Vibration

doi: 10.3969/j.issn.0258-2724.20190023
  • Received Date: 17 Jan 2019
  • Rev Recd Date: 30 May 2019
    • Available Online: 18 Aug 2020
  • Publish Date: 01 Feb 2021
    Abstract
  • To study the effect of fastener structure parameters on wheel-rail frictional self-excited oscillation, based on the viewpoint of frictional self-excited vibration of the wheel-rail, a finite element model of the wheelset-track system on a small-radius curve track supporting by the monolithic roadbed was established. Then, the wheel-rail frictional self-excited vibration model was verified by the field test and numerical simulation. Furthermore, the influence of fastener parameters on the wheel-rail frictional self-excited oscillation was studied. Considering the interaction between multiple factors, the occurrence possibility of wheel-rail frictional self-excited oscillation was obtained by the least squares method. The results show that the wheel-rail frictional self-excited oscillation caused by the saturated creep force between the wheel and rail is a key reason that causes rail corrugation on a small-radius curve track supporting by the monolithic roadbed. The frictional self-excited oscillation mainly occurs at 300 Hz and 320 Hz. According to the multi-parameter fitting equation of fastener structure, when the vertical damping of fastener is 1000 N•s/m and the fastener distance is 1.0 m in the appropriate range, the possibility of wheel-rail frictional self-excited oscillation is reduced, thereby the possibility of rail corrugation is reduced.

     

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