In order to study the change characteristics of the lateral creep force of high-speed railway,firstly,a single wheel-to-wheel-rail contact dynamic model is established,and the change characteristics of the lateral creep force between wheel and rail are obtained by simulation under different speed conditions.Secondly,the wheel-rail rolling vibration test platform is designed and manufactured,and the characteristics of the creep force between wheel-rail are obtained by experiments under different speed conditions.Finally,the characteristic curve trends and key characteristics are compared between simulation and experiment.It is found that there are negative slope and horizontal stages in the creep force curve,and with the increase of train speed,the peak point of the curve(the critical point of wheel-rail creep)decreases and moves to the left,indicating that the faster the speed,the more likely the wheel-rail transverse slide will occur,resulting in wheel-rail damage and train derailment.
关键词
高速铁路/轮轨/蠕滑特性/仿真/滚动实验
Key words
high-speed railway/wheel and rail/creep characteristics/simulation/rolling experiment
维普
万方数据