Similarity of Small-Scale Wheelset-Track Model for Investigation of Rail Corrugation

被引：0
|
作者：
Kang X. [1 ]
Chen G. [1 ]
Lü J. [1 ]
Zhao X. [1 ]
Wu B. [1 ]
Zhu Q. [1 ]
机构：
[1] School of Mechanical Engineering, Southwest Jiaotong University, Chengdu
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2020年 / 55卷 / 06期
关键词：
Friction; Numerical simulation; Rail corrugation; Similarity study; Small-scale wheelset-track model;
D O I：
10.3969/j.issn.0258-2724.20180898
中图分类号：
学科分类号：
摘要：
In order to study rail corrugation on sharp metro curved tracks, based on the theory that the friction-induced vibration causes rail corrugation, the similarity between a full-scale and a small-scale wheelset-track models was studied. Firstly, to determine if the wheel-rail creep force was saturated, 1:1 and 1:5 dynamics models of vehicle-track system were established, respectively. Curve negotiations of these two models were simulated. Secondly, two finite element models were established whose wheel-rail contact parameters were from the dynamic simulation. Finally, using the complex eigenvalue analysis studied the stability of each wheelset-track system.The results show that when 1:1 and 1:5 vehicle models negotiate the sharp curved line respectively, creep forces on the inner and outer wheels of leading wheelsets are approximately saturated. Deviations of the vertical suspension force on two axle-ends of the wheelset and the wheel-rail contact angle are less than 3% and 5%, respectively. Frequency deviations of all similar unstable vibration modes are lower than 3%. The small-scale wheelset-track model has good similarity with full-scale model in the dynamic performance and the stability; therefore, the small-scale model can be used to study the formation mechanism of rail corrugation, both theoretically and experimentally. Copyright ©2020 JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY. All rights reserved.
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页码：1320 / 1327
页数：7
相关论文
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