摘要
为确保时速400 km下列车安全平稳运行,车辆部件正常使用,以车辆-轨道耦合动力学为理论基础,将车轮多边形磨耗考虑为轨道不平顺激励,针对单阶主导的车轮多边形形式,分析了车轮多边形阶数、幅值对车辆-轨道动态相互作用的影响规律;基于轮轨垂向力170 kN的限值要求,给出了时速400 km行车条件下车轮多边形阶数、幅值组合的安全限值。结果表明:随着车轮多边形阶数增加,轮轨垂向力逐渐出现高频波动,且阶数越高,波动频次越高,波动幅值越大;车轮多边形幅值越大,对轮轨动态相互作用的影响越明显;相比无多边形的正常车轮工况,轮对垂向振动加速度增幅总体上随车轮多边形阶数增大而增大;车轮多边形对车体和构架影响不大。
In order to ensure the safe and stable operation of the train at the speed of 400 km/h and the normal use of vehicle components,based on the vehicle-track coupling dynamics,the wheel polygon wear was considered as the excitation of track irregularity,and the influence of the wheel polygon order and amplitude on the vehicle-track dynamic interaction was analyzed for the single-order dominant wheel polygon form.Based on the limit requirement of 170 kN of wheel-rail vertical force,the safety limit value of wheel polygon order and amplitude combination was given under the condition of 400 km/h.The results show that with the increase of the order of wheel polygon,the wheel-rail vertical force gradually fluctuates at high frequency,and the higher the order,the higher the frequency and the greater the amplitude of the fluctuation will be.The greater the amplitude of the wheel polygon,the more obvious the influence on the wheelrail dynamic interaction will be.Compared with the normal wheel condition without polygon,the amplitude of the vertical vibration acceleration of the wheel set generally increases with the increase of the polygon order of the wheel.The wheel polygon has little effect on the body and frame.
作者
黄珊
张涛
罗俊
王开云
HUANG Shan;ZHANG Tao;LUO Jun;WANG Kaiyun(National Innovation Center of High Speed Train,Qingdao Shandong 266111,China;State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)
出处
《铁道建筑》
北大核心
2023年第3期15-18,39,共5页
Railway Engineering
基金
国家自然科学基金(11790283)。
关键词
高速铁路
车辆-轨道耦合动力学
车轮多边形
轮轨垂向力
安全限值
high speed railway
vehicle-track coupled dynamics
wheel polygonal
wheel-rail vertical force
safety limit
