Study of Train Derailments Caused by Damage to Suspension Systems

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3 引文 斯高帕斯(Scopus)

摘要

A nonlinear finite element method was used to investigate the derailments of trains moving on multispan simply supported bridges due to damage to suspension systems. At the simulation beginning, the initial vertical trainloads to simulate the train gravity weight are gradually added into the mass center of each rigid body in the train model with large system damping, so the initial fake vibration is well reduced. A suspension is then set to damage within the damage interval time, while the spring and/or damper changes from no damage to a given percentage of damage. Finite element parametric studies indicate the following: (1) the derailment coefficients of the wheel axis nearby the damage location are significantly increased. (2) Damage to the spring is more critical than that to the damper for the train derailment effect. (3) The derailment coefficient induced by damage to the primary suspension is more serious than that to the secondary suspension. (4) If rail irregularities are neglected, the train speed has little influence on the derailment coefficients generated from damage to suspensions. (5) The train derailment coefficients rise with a decrease in the damage interval time, so sudden damages to suspension systems should be avoided.

原文English
文章編號031008
期刊Journal of Computational and Nonlinear Dynamics
11
發行號3
DOIs
出版狀態Published - 2016 五月 1

All Science Journal Classification (ASJC) codes

  • 控制與系統工程
  • 機械工業
  • 應用數學

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