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首页> 外文期刊>Journal of Mechanical Science and Technology >Study on track dynamic forces due to rail short-wavelength dip defects using rail vehicle-track dynamics simulations
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Study on track dynamic forces due to rail short-wavelength dip defects using rail vehicle-track dynamics simulations

机译：利用轨道车辆-轨道动力学模拟研究由于轨道短波倾角缺陷引起的轨道动力

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摘要

A rail vehicle-track interaction dynamics model has been applied to determine the track vertical dynamic forces due to rail short-wavelength dip defects such as squat, dip joints and welds, etc., which are required in both rail vehicle acceptance procedure and track maintenance. The model is validated using the field measurement data of rail squat defects and accelerations on a vehicle axlebox. The simulated track dynamic forces - the P_2 forces due to rail dipped joints have been compared with those calculated by using a well-known formula. The results are compared and the formula's limitations have been discussed. The dependence of the track vertical dynamic forces on the rail dip defect size and vehicle speed has also been investigated.
机译：已应用轨道车辆-轨道相互作用动力学模型来确定轨道短波倾角缺陷（例如，下蹲，浸入接头和焊缝等）引起​​的轨道垂直动力，这在轨道车辆验收程序和轨道维护中都需要。使用轨道下蹲缺陷和车辆轴箱上的加速度的现场测量数据验证了该模型。已将模拟的轨道动态力-由于钢轨浸入接头而产生的P_2力与使用众所周知的公式计算出的力进行了比较。比较结果并讨论了公式的局限性。还研究了轨道垂直动力对轨道倾角缺陷尺寸和车速的依赖性。

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