摘要
CRH3系列高速动车组在长期服役过程中偶有发生蛇行运动稳定性裕量不足的问题,车辆装配T60型抗蛇行减振器,在车轮磨耗末期易发生构架横向加速度报警问题,装配T70型抗蛇行减振器,则在新轮或车轮磨耗初期易发生“晃车”的问题。针对晃车和报警问题开展可变刚度抗蛇行减振器的仿真与试验研究,以满足车辆在不同轮轨接触状态下车辆的蛇行运动稳定性需求。动力学仿真表明,可变刚度抗蛇行减振器能有效兼顾解决“晃车”和“报警”问题;进一步分析可变刚度抗蛇行减振器与两种高速踏面的适应性,采用S1002CN踏面时车辆临界速度高于350 km/h,而采用LMB10踏面时仅为220 km/h,且S1002CN踏面对应的平稳性和舒适度指标都优于LMB10踏面。最后通过整车滚振台架试验对变刚度抗蛇行减振器性能进行了试验验证,结果表明该减振器可以兼顾轮轨低锥度和高锥度匹配状态,可使车辆均具有良好的动力学性能。
CRH3 series high-speed EMUs occasionally have a problem of insufficient hunting stability margin during long-term service.Vehicles equipped with T60 yaw dampers are easy to have frame lateral acceleration alarm at the end of wheel wear.When equipped with T70 yaw dampers,the problem of“carbody hunting”is likely to occur at the beginning of new wheel or wheel wear.Here,simulations and tests for variable stiffness yaw damper were performed to solve problems of carbody hunting and bogie hunting,and meet requirements of vehicle hunting motion stability under different wheel-rail contact conditions.Dynamic simulation showed thatthe variable stiffness yaw damper can effectively solve problems of“carbody hunting”and“bogie hunting”.Furthermore,adaptabilities of variable stiffness yaw damper and two high-speed treads were analyzed.It was shown that when S1002CN tread is used,the critical speed of vehicle is higher than 350 km/h,while it is only 220 km/h when LMB10 tread is used;stability and comfort indexes of S1002CN tread are better than those of LMB10 tread.Finally,the performance of variable stiffness yaw damper was verified using rolling vibration bench tests of the whole vehicle.The results showed that the variable stiffness yaw damper can consider both wheel-tail low taper and high taper matching conditions,and make vehicles always have good dynamic performance.
作者
霍文彪
刘学刚
李辰生
刘志强
邬平波
HUO Wenbiao;LIU Xuegang;LI Chensheng;LIU Zhiqiang;WU Pingbo(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China;CRRC Tangshan Co.,Ltd.,Tangshan 063035,Hebei,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2023年第9期95-105,共11页
Journal of Vibration and Shock
基金
国家自然科学基金高铁联合基金(U1934202)
牵引动力国家重点实验室自主课题(2021TPL-T05)。
关键词
高速列车
抗蛇行减振器
变刚度
晃车
失稳报警
动态刚度
动态阻尼
high-speed train
yaw damper
variable stiffness
carbody hunting
bogie hunting
dynamic stiffness
dynamic damping
