长大列车纵向冲动对车辆曲线运行安全性影响分析  

Influence of Longitudinal Impulse of Trains on Safe Operation in Curve Route

作　　者：徐力 孙树磊[2] 

机构地区：[1]南车长江车辆有限公司产品研究所,湖北武汉430212 [2]西南交通大学机械工程学院,四川成都610031

出　　处：《铁道机车车辆》2015年第5期59-63,112,共6页Railway Locomotive & Car

摘　　要：为分析长大列车在曲线轨道上运行时纵向冲动对车辆运行安全性的影响,运用多体动力学方法,在UM软件中建立长大列车混合动力学模型,对比分析了长大列车在曲线匀速运行和紧急制动时中间车辆的脱轨系数、轮轨横向力和轮重减载率等安全性指标的变化情况。分析结果表明:长大列车在曲线上紧急制动时,列车纵向冲动对长大列车曲线运行安全性影响较大。In order to analyze the effect of the longitudinal impulse on the running safety of vehicles of a train braking on curve routes,by using the multi-body dynamics method,the mix dynamics train model is built in UM software,and then the changes of derailment factor,wheel-rail lateral force and wheel unloading rate of the middle vehicle is analyzed while the heavy haul train uniform motion and emergency braking on the curve route.Analysis results indicate that when a train makes emergency braking on a curve route,the longitudinal impulse has great influence for the running safety of vehicles.

关 键 词：长大列车 纵向冲动 曲线 运行安全性 

分 类 号：U260.111[机械工程—车辆工程]