Research on Parameters of the Curve Negotiation Performance of High-Speed Train Composed of Multiple Vehicles

Abstract

This paper calculates the wheel/rail nonlinear numerical solution that both changes in trend or in values are relatively consistent conclusion, using different methods of comparative analysis of the cycle dynamics system for studying the influence of the curve negotiating velocity and orbital parameters on the performance of high-speed train. Then based on single-section vehicle system program, a high-speed train coupling system considering vehicle terminal connection device is established. The influence of curve negotiating velocity and orbital parameters on the performance of high-speed train is analyzed. The results show that, with the curve negotiating velocity increasing, the derailment coefficient, rate of wheel load reduction, and the vertical force of wheel rail have a tendency to rise after falling first, lateral force of wheel rail monotone increasing. When the vehicle is in a superelevation state, the indicators are slightly lower than the equilibrium state. While the indicators with parameters change significantly when the vehicle is in a underelevation state. For instance, when the radius of the curve is 5000m to the radius 6700m, the derailment coefficient increases by 53.6% and rate of wheel load reduction is increased by 44.1%.