Dynamic Interaction between Heavy Locomotive and Track under Longitudinal Force of Coupler
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摘要: 为了研究重载机车的轮轨动态安全性,考虑车钩纵向力对重载机车与轨道结构系统动力学性能的影响,根据实测车钩力和线路不平顺,对重载机车在直线轨道和曲线轨道上制动时的轮轨动态相互作用性能进行了仿真计算.研究结果表明,在纵向车钩力为1500 kN,车钩自由角为3°的工况下,重载机车以80 km/h的速度在直线轨道上和以60 km/h的速度在曲线轨道上制动时,所有轮轨安全性能指标满足行车要求.Abstract: In order to investigate the wheel/rail dynamic performance of a heavy locomotive,the effect of longitudinal force of the coupler on locomotive-track coupled dynamics was taken into account.The dynamic performances under emergency braking on a tangent track and a curved track were computed numerically on the basis of the measured coupler force and irregularity.The research results show that all safety indices meet the limited values when a heavy locomotive runs on a tangent track at a braking speed of 80 km/h and on a curved track at a braking speed of 60 km/h.
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Key words:
- heavy locomotive /
- longitudinal force /
- dynamic interaction /
- safety
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