A test program was undertaken at the Transportation Test Center in Pueblo, Colorado, to investigate whether modifications to the truck design, particularly a reduction of the primary yaw stiffness, would reduce wheel and rail wear on a new rapid transit system. The test program examined the behavior of the trucks during the negotiation of a number of curves typical of those encountered in revenue service. Test results compared favorably with predictions from a mathematical model of the truck’s curving behavior and, subsequently, the model was used to evaluate a number of truck parameter variations. Results show that the reduction in primary yaw stiffness produced a large improvement in curving performance. This paper also quantifies the effects of axle misalignment and discusses the need for experimental data to relate a wear index to wheel and rail wear.
Verification of a Transit Vehicle’s Curving Behavior and Projected Wheel/Rail Wear Performance
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Elkins, J. A., and Allen, R. A. (September 1, 1982). "Verification of a Transit Vehicle’s Curving Behavior and Projected Wheel/Rail Wear Performance." ASME. J. Dyn. Sys., Meas., Control. September 1982; 104(3): 247–255. https://doi.org/10.1115/1.3139704
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