Comparison of Wheel/Rail Dynamic Interaction of Two Kinds of Metro Vehicles with Different Driving Mode

doi:10.3901/JME.2019.14.112

Abstract

Abstract: In order to study the dynamic response characteristics of wheel/rail system of linear induction motor (LIM) metro vehicle and rotary motor (RM) metro vehicle, the KALKER's linear creep theory is used to the wheelset steering abilities during the two types of vehicle curve negotiation under driving, then the LIM and RM vehicle-track coupling dynamic models are established, which are used to investigate the effect of traction force and curve radius on wheel/rail dynamic interactions of LIM vehicle and RM vehicle. The result shows that the traction force has a negligible effect on the wheel/rail creep and dynamic interaction characteristic for the LIM vehicle, and its wheel/rail creep force is not limited by the wheel/rail creep saturation. LIM metro vehicles are better than traditional RM metro vehicles in terms of the steering ability of guiding wheelset on curve tracks.

Key words: LIM metro vehicle, rotary motor vehicle, traction force, vehicle-track coupling dynamics, wheel/rail creep

CLC Number:

U270

YANG Yunfan, TAO Gongquan, WU Lei, WEN Zefeng. Comparison of Wheel/Rail Dynamic Interaction of Two Kinds of Metro Vehicles with Different Driving Mode[J]. Journal of Mechanical Engineering, 2019, 55(14): 112-121.

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