Analysis of Wheel-Rail Dynamic Response and Key Influence Factors of Wagon Curve Passing
For the potential safety and online perception problems when wagon passing through the small radius curves,an analysis has been carried out based on the line test and dynamic simulation.The results show that the curving performance could be comprehensively characterized by the dynamic response characteristics of wheel/rail at the gradial circle point,point of curve to spiral and the center of circular curve,and then the comprehensive evaluation index based on the derailment coefficient,lateral force of wheelset and other parameters corresponding to the above key location could be used to quantitative evaluate the curving performance.The response of wheelset with different axles at the different curve positions were significantly different,and the running speed would directly affect the trend of this difference.Generally speaking,the wear numbers of the first and third guided axles were relatively higher compared to other axles,and the lateral force of unguided wheelset would be increased when the superelevation was insufficient.In addition,the primary suspension stiffness have more significant effects on the curve passing performance of wagon than the secondary stiffness,cross bar stiffness and some other parameters.
small radiuscurve passingdynamic responseonline perception
万方数据
维普
