Derailment risk analysis of a tilting railway vehicle moving over irregular tracks under wind loads

Yung Chang Cheng, Cheng Hao Huang, Chen Ming Kuo, Chern Hwa Chen

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

Based on the nonlinear creep model and Kalker's linear theory, this paper studies the governing differential equations of motion for a tilting railway vehicle moving over irregular curved tracks under wind loads. The tilting vehicle is modeled by a 24-degree-of-freedom (24-DOF) car system, considering the lateral, roll and yaw motions of each wheelset, the lateral, vertical, roll and yaw motions of each bogie frame and the car body. The derailment quotients of the tilting railway vehicle with the wheelsets moving over irregular rails in the lateral direction and the car body acted upon by the wind loads are investigated for various tilting angles. The analysis results show that in general, the derailment quotient of the wheelset increases as the tilting angle of the railway vehicle increases. When the railway vehicle moves at low speeds, the derailment quotient calculated for the case with rail irregularities is greater than that for the case with no rail irregularities. Moreover, the derailment quotient of a wheelset moving over curved tracks of various radii is presented. Finally, the derailment quotient computed for the case under wind loads is greater than that free of wind loads. As a result, the influence of rail irregularities and wind loads on the derailment risk of a tilting vehicle cannot be ignored.

原文English
文章編號1350038
期刊International Journal of Structural Stability and Dynamics
13
發行號8
DOIs
出版狀態Published - 2013 十二月

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 建築與營造
  • 航空工程
  • 海洋工程
  • 機械工業
  • 應用數學

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