Abstract

A detailed dynamic model of the curving of a non-pendulum rail vehicle was formulated and general equations of motion were derived considering both one point contact and two-point contact. Digital simulations of curving for a representative example were made. It was shown that two-point contact generated larger lateral wheel-rail force comparing one-point contact due to lack of self steering effect. Effect of forced steering on steady lateral wheel-rail force and effects of lateral stiffness of axle suspension and forced steering on dynamic lateral wheel-rail force when passing rail Joints and artificially generated random irregularity were examined. It was shown that forced steering had effect of decreasing both steady and dynamic lateral wheel-rail force, and smaller lateral stiffness of axle suspension had effect of decreasing dynamic lateral wheel-rail force when passing rail joints.

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