Statistics Characters of Wheel/Rail Loads of Intercity EMU

DING Ran, LI Qiang, REN Zunsong
2019 Journal of Mechanical Engineering  
Abstract:With respect to intercity EMU, there are rare studies on its wheel/rail force at present. Considering that its speed level and line conditions are very different from the high-speed EMU, it is necessary to further study its wheel/rail force. By using the instrumented wheelset, the wheel/rail force of a intercity EMU is measured under a 4 600 km test. the testing results show that the dynamic load coefficient of the speed-increased new lines are about 0.25-0.35, which is not significant
more » ... different from that of the existing lines, and that 350 km/h-high-speed EMU. The statistical results show that even the go and return of the same line, the joint distributions of the vertical and lateral force are significant different. The load spectra of wheel/rail force and the specific statistical characteristics under various typical conditions concluded in this paper can be used in the follow-up research in related fields such as assessment of vehicle safety, reliability or vehicle dynamics.
doi:10.3901/jme.2019.06.108 fatcat:o5oh6sd47vewtdkjhtcgak5jwi