摘要
悬挂式单轨车辆走行轮在车辆运行中起到承载和传力的重要作用,其走行轮失效对悬挂式单轨车辆运行性能有重大影响。通过多刚体动力学理论建立悬挂式单轨车轨耦合动力学模型,仿真分析了不同工况下走行轮失效对单轨车辆曲线通过及运行平稳性的影响。仿真结果表明:空载状态下走行轮失效的悬挂式单轨车辆在曲线半径100 m的线路上限速为35 km/h,而满载状态下走行轮失效的车辆一直处于不安全状态,需要尽快行驶到就近站点疏散乘客;同侧走行轮失效对单轨车辆的影响趋势基本一致;在相同行车速度下,走行轮失效时竖向平稳性指标出现了部分数值超过3.0的情况,说明走行轮失效时车辆的运行平稳性会变差。仿真研究结果可为走行轮失效的悬挂式单轨车辆运行提供参考。
The suspended monorail vehicle running wheel plays an important role in carrying and transmitting force during vehicle operation.The running wheel failure has a significant impact on the running performance of the suspended monorail vehicle.The suspended monorail rail coupling dynamics model is established by multi-rigid dynamics theory,and the influence of running wheel failure on the curve passage and running stability of monorail vehicles under different working conditions is simulated and analyzed.The simulation results show that the speed limit of the suspended monorail vehicle with running wheel failure under no-load condition is 35 km/h on the curvewith a radius of 100 m,and the vehicle with running wheel failure under full load condition is always in unsafe state,necessary to be driven to the nearest station as soon as possible to evacuate passengers;the influence of running wheel failure on the same side of the monorail vehicle is basically the same;at the same driving speed,the vertical stability index shows a partial value exceeding 3.0 when the running wheel failure occurs,demonstrating that the running stability of the vehicle worsens when the running wheel fails.The simulation research results can provide reference for the operation of suspended monorail vehicles with running wheel failure.
作者
杜子学
刘又铭
杨震
周军超
许舟洲
DU Zixue;LIU Youming;YANG Zhen;ZHOU Junchao;XU Zhouzhou(Research Institute of Rail Transit,Chongqing Jiaotong University,400074,Chongqing,China)
出处
《城市轨道交通研究》
北大核心
2021年第1期42-46,共5页
Urban Mass Transit
基金
国家自然科学基金项目(51475062)
重庆市研究生科研创新项目(2108B0107)。
关键词
悬挂式单轨车辆
走行轮失效
曲线通过性能
运行平稳性
仿真分析
suspended monorail vehicle
travel wheel failure
curve passage performance
running stability
simulation analysis
