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Jia Xiaohong. Dynamic Performance of Metro Train Passing Through Turnout Branch in Depot

First International Conference on Rail Transportation, Chengdu, China, July 10-12, 2017

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Abstract: Turnout is the weak link of track, which is the key factor affecting the safety of train. The most important feature is variation of the cross section shape along the length direction, which leads to transverse irregularity and vertical irregularity. A type A vehicle-turnout coupled dynamics model was established by using the multi-body dynamics software UM, and based on the 7# right turnout, the type A metro vehicle model and variable cross section rail turnout model were established to analyze the dynamics performances of train pass through turnout branch, which were then evaluated according to the present vehicle operation safety evaluation standard. The results show that when Chinese type A subway vehicle passes through the 7# turnout branch at the speed of or below 50 km /h all safety indexes meet the relevant safety standards, which ensures the safe operation of the train; but the lateral displacement of the vehicle wheel is relatively larger, thus there is a tendency of train shaking. The higher the vehicle speed is, the greater the wheel/rail lateral force is.

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