Computer simulation models have been developed to analyze the stability and curving performance of transit vehicles with conventional, radial and forced-steered trucks. Analytical tools were used to generate extensive parametric data characterizing the steady-state curving stability performance tradeoffs offered by various truck and wheel profile designs. The steady-state curving analysis has been extended to develop a dynamic curving model for computing the time varying wheel-rail interaction forces and vehicle suspension and body forces and motions during curve entry and exit as well as due to changes in track geometry. The dynamic curving model includes nonlinear wheel/rail geometry, including multi-point wheel-rail contact, nonlinear vehicle suspension elements, and rail lateral flexibility. Dynamic simulations of curve entry have been performed which have shown the influence of wheel profile and suspension design for conventional, self-steered and forced-steered trucks on dynamic curving forces. Available experimental dynamic curving field test data is reviewed in the context of the model.
Analysis of Rail Transit Vehicle Dynamic Curving Performance
1984
230 pages
Report
No indication
English
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