Stability and Curving Performance of Conventional and Advanced Rail Transit Vehicles

摘要

Analytical studies are presented which compare the curving performance and speed capability of conventional rail transit trucks with self steering (cross-braced) and forced steering (linkages between carbody and wheelsets) radial trucks. Truck curving performance is measured in terms of the work performed by the wheel/rail friction forces in the contact zone during curve negotiation. The contact work is used as an indication of wheel and rail wear rates as well as the additional power required to negotiate curves. Truck speed capability is expressed in terms of the maximum operating speed before lateral instability or hunting occurs.