摘要
基于车辆-轨道耦合动力学理论,针对200km/h宽车体客车通过既有提速铁路半径为300m曲线工况,计算了抗侧滚扭杆失效下的车辆动态包络线,并从动态包络线角度,分析了客车通过曲线的安全速度.计算结果表明:通过曲线时,相对不失效情况下而言,200km/h客车在抗侧滚扭杆失效后的动态包络线范围明显增大,车辆安全性降低,为满足车辆动态包络线限界标准,客车通过既有提速铁路半径为300m曲线时的速度不应超过80km/h.
According to the vehicle passing through an existing speed-up curved track with the radius of 300 mat a speed of 200km/h,a calculation for vehicle dynamic envelope is established based on the vehicle-track coupled dynamics theory on the condition that the rolling resistant torsional bar of the vehicle is failed.Then,the dynamic envelope is applied to the investigation on the safe speed determination of a vehicle passing through an existing speed-up curved track.The simulation results indicate that the dynamic envelope range is more evident for the vehicle with a sound rolling resistant torsional bar than for the vehicle with a defected rolling resistant torsional bar when the vehicle passing through a curved track.Under this condition,the safety of the vehicle is degraded.In order to guarantee the vehicle dynamic envelope range to meet the requirement of the limit standard,the operation speed of the vehicle should not exceed 80km/h when it is passing through the curved track with the radius of 300 min an existing speed-up railway line.
出处
《兰州交通大学学报》
CAS
2016年第1期124-128,共5页
Journal of Lanzhou Jiaotong University
关键词
车辆-轨道耦合动力学
抗侧滚扭杆
动态包络线
安全速度
vehicle-track coupled dynamics
rolling resistant torsional bar
dynamic envelope
safe speed
