Research on Dynamic of Urban Rail Vehicle of Variable Speed and Long-wave Excitation Conditions

doi:10.3901/JME.2019.04.118

Abstract

Abstract: Real-time variable speed conditions of urban rail trains are extremely common operating conditions, if only to uniform conditions instead, it cannot get a satisfactory conclusion. To this end, a new dynamic model considering coupled internal and external excitation is proposed. Based on the traction condition and the bridge creep on the elevated rail line, the vehicle dynamics performance under the coupling of the internal and external are studied. Based on the idea of micro-element method, the relationship between the torque and the running torque of the traction condition of the city rail is calculated, and the running condition is obtained under the reasonable comprehensive condition. The results show that the number of wheel wear and the vertical stability of the vehicle are increasing under the variable speed condition. Under the long wave irregularity of the bridge, the vertical stability index of the vehicle decreases, while the lateral stability Indicators have less impact.

Key words: bogie, rail vehicle, rotation resistance, running safety, concrete creep, dynamic performance, urban rail vehicle, variable speed condition

CLC Number:

U270

YANG Jianwei, LIU Chuan, WANG Jinhai, SUN Ran, ZHU Hekai. Research on Dynamic of Urban Rail Vehicle of Variable Speed and Long-wave Excitation Conditions[J]. Journal of Mechanical Engineering, 2019, 55(4): 118-125.

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