Fatigue Life Calculation Method for Axle Box Bearing of High-speed Train

被引:0
|
作者
Li Z. [1 ]
Shang H. [2 ]
Zhang X. [3 ]
Sun W. [1 ]
机构
[1] School of Mechanical Engineering, Dalian University of Technology, Dalian
[2] R&D Center-Mechanical Technology Department, Goldwind Science & Technology Co., Ltd., Beijing
[3] School of Mechanical Engineering and Automation, Dalian Polytechnic University, Dalian
来源
Tiedao Xuebao/Journal of the China Railway Society | 2020年 / 42卷 / 03期
关键词
Axial clearance; Double-row tapered roller bearings; Fatigue life; Load distribution; Quasi-static model;
D O I
10.3969/j.issn.1001-8360.2020.03.007
中图分类号
学科分类号
摘要
In order to predict the bearing fatigue life accurately, considering the influence of clearance and centrifugal effect on fatigue life, the calculation method of Lundberg and Palmgren theory was compared with the standard calculation method of ISO 281:2007. Secondly, the improved calculation method of L-P theory was adopted to compare with the two above-mentioned methods, which further considered the load distribution inside the bearing under the combined load and the effect of the rolling element. The quasi-static model of double-row tapered roller bearings was established, which has (5+3n) degree of freedom. The load distribution and fatigue life of the axle box bearing were obtained by solving the quasi-static equilibrium of rollers and bearing using Python programming language. The results show that the larger the negative clearance of the bearing, the larger the value of the load distribution in the bearing. The change of the train speed has little effect on the load distribution in the bearing. The maximum fatigue life is obtained by using the ISO 281:2007 method. The difference of fatigue life is enlarged with the increment of the negative clearance of the bearing by using the L-P theory and ISO 281:2007 method. The minimum fatigue life is obtained by using the improved L-P theory. The negative clearance does not affect the percentage of fatigue life between the L-P theory and the improved L-P theory. © 2020, Department of Journal of the China Railway Society. All right reserved.
引用
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页码:55 / 62
页数:7
相关论文
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