Hunting Patterns and Bifurcation Characteristics of a Railway Bogie on Curved Track

被引：0

作者：

Shi, Yuqing ^{[1
,2
]}

Yang, Jiuhe ^{[3
,4
]}

Luo, Guanwei ^{[2
]}

机构：

[1] School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou

[2] Gansu Provincial Key Laboratory of System Dynamics and Reliability of Rail Transport Equipment, Lanzhou

[3] Technology and Equipment of Rail Transit Operation and Maintenance Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu

[4] China Railway Chengdu Group Co.Ltd., Chengdu

来源：

Tiedao Xuebao/Journal of the China Railway Society | 2024年 / 46卷 / 08期

关键词：

bifurcation; hunting motion; parameter domain; two-axle bogie;

D O I：

10.3969/j.issn.1001-8360.2024.08.005

中图分类号：

学科分类号：

摘要：

Based on the case of a two-axle railway bogie running on a curved track, the hunting patterns and bifurcation characteristics of the bogie in the presence of the flange contact nonlinearity were discussed through the two-dimensional parameter variable bifurcation diagram. The dynamics and differences of the bogie system with unworn and worn wheel-sets were compared to analyze the influence of wheel tread profile changes caused by wear on the hunting characteristics of the bogie system. By revealing the incidence relation between hunting patterns and bifurcation characteristics of the bogie system and its key parameters, the parameter sensitivity and reasonable matching range were determined, which provided a theoretical basis for the comprehensive design and optimal combination of railway vehicle suspension parameters. The results show that the impacts of the leading and trailing wheelsets on the rail begin with the impact of wheel flange on the outer rail. Regardless of the new wheel period or wear period, the impact of the trailing wheelsets on the inner and outer rails falls behind that of the leading wheelsets, while the impact strength of the leading wheelsets on the rail is greater than that of the trailing wheelsets, especially in the wear period. The changes in the wheel tread profile have a great influence on the instability speed of the period 1 hunting mode, which is mainly caused by period doubling bifurcation and Neimark-Sacker bifurcation. © 2024 Science Press. All rights reserved.

引用

页码：37 / 47

页数：10

共 26 条

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