Simulation of Hunting of Rail Vehicles : The Case using a Compound Circular Wheel Protile

概要

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Rail vehicles must have both good curving performance and stability at high speeds. Such vehicles have a compound circular wheel profile, soft suspension of the wheelset and yaw dampers. A detailed dynamic model (31 DOF) for these vehicles was formulated, and general equations of motion were derived considering various non-linearities such as the wheel profile, clearances in the wheelset suspension and creep forces between the wheel and rail. Digital simulations for a representative example were made. It was shown that the yaw dampers had a large effect on improving stability, especially in suppressing divergent hunting at higher vehicle speeds. Then, eigenvalue analyses for the linearized model were made and the cause of the above-mentioned effect of the yaw dampers was clarified. The influence of some other factors such as clearances in the wheelset suspension and supporting stiffnesses of the yaw dampers and lateral dampers was also considered.
一般社団法人日本機械学会の論文
1991-09-15