Correlation between Wheel/Rail Vertical Force and Track Profile Irregularity in High Speed Railway

被引：0
|
作者：
Niu L. [1 ]
机构：
[1] Infrastructure Inspection Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing
来源：
Zhongguo Tiedao Kexue/China Railway Science | 2021年 / 42卷 / 05期
关键词：
High speed railway; Track change rate; Track management; Track profile irregularity; Wheel/rail contact finite element model; Wheel/rail vertical force;
D O I：
10.3969/j.issn.1001-4632.2021.05.06
中图分类号：
学科分类号：
摘要：
The ABAQUS commercial software is applied to establish the 3D wheel/rail contact finite element model. Taking the parameters of China's high-speed railway lines and typical vehicles in service as the model simulation parameters, and taking the ballastless track profile irregularity spectrum and cosine track profile irregularity of China's high-speed railway as the model inputs respectively, the correlation characteristics of the amplitude and phase between the track profile irregularity amplitude, wavelength and wheel/rail vertical force response in time and frequency domain are simulated and analyzed. The function expressions between the additional wheel/rail vertical force and track profile irregularity characteristic parameters at different vehicle speeds are fitted. The results show that the fluctuation range of the additional wheel/rail vertical force decreases nonlinearly with the increase of track profile irregularity wavelength. The delay phase between the track irregularity and wheel/rail vertical force increases with the increase of vibration frequency, which is between 0.02 π and 0.10 π as a whole. When the wavelength of track profile irregularity is greater than 30 m, the relationship between the additional wheel/rail vertical force and the track change rate is approximately linear, and the proportional coefficients are 13.14 and 19.19 at the speed of 300 km · h-1 and 350 km · h-1 respectively. © 2021, Editorial Department of China Railway Science. All right reserved.
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页码：50 / 60
页数：10
相关论文
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