摘要
在分析高速轮轨匹配特征的基础上,以350 km.h-1速度等级的CRH3动车组作为研究对象,应用线性稳定性分析方法绘制高速轮轨空间的稳定安全裕度3维图。线性稳定性计算表明:等效锥度越大,转向架蛇行振动固有频率越高,因而必须不断增强抗蛇行减振器的串联刚度。非线性稳定性仿真计算表明:抗蛇行减振器需要利用其动态液压刚度的非线性形成宽频带吸能特性,以满足衰减蛇行振动、控制蛇行振幅和权衡准静态曲线通过性能等要求。仿真计算得出的动车转向架横向加速度值与实际测试的加速度值相吻合。根据曲线踏面磨耗情况确定了CRH3动车组选用3个典型车轮踏面(XP55,S1002CN和LMA)可以达到的最高商业运营速度。
For CRH3 multiple units（MU） running on high-speed railway at 350 km·h1,the 3D figure of stability safety margin on high-speed wheel/rail（W/R） interaction space was drawn by the linear stability analysis methodology based on the high-speed W/R matching calculation.The linear stability analyses demonstrate that the more equivalent conicity,the higher inherent frequency of bogie hunting vibration,thus the stiffness in series must be increased continually for anti-hunting dampers.The simulation analyses of non-linear stability show that wider frequency-band absorbing energy features of the anti-hunting dampers are necessary to be formed with the non-linearity of their dynamical hydraulic stiffness so that the requirements can be satisfied,which are attenuating the hunting vibration,restricting the amplitude of hunting vibration and trading-off the dynamic performance of quasi-static curve negotiation,etc..The lateral accelerations of the motor bogies calculated from the simulation are consistent with the actual measured ones.The maximum commercial velocities of the three typical treads（XP55,S1002CN and LMA） are determined theoretically from the aspect of tread wear in curve negotiation.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2010年第3期57-63,共7页
China Railway Science
基金
"十一五"国家科技支撑计划项目(2006BAF01A01)
辽宁省教育厅2007年创新团队资助项目(2007T013)
关键词
动车转向架
轮轨关系
高速列车
轮轨匹配
踏面磨耗
抗蛇行减振器
稳定性
Motor car bogie
Wheel rail relation
High-speed train
Wheel rail matching
Tread wear
Anti-hunting damper
Stability
