Analysis of Fatigue Life of Slewing Bearings Considering Size Effect

被引：0

作者：

Luo, Zhong ^{[1
,2
,3
]}

Yang, Yao-Jia ^{[1
,2
]}

Zheng, Si-Jia ^{[1
,2
]}

Zhou, Ji-Lai ^{[1
,2
]}

机构：

[1] School of Mechanical Engineering & Automation, Northeastern University, Shenyang

[2] Key Laboratory of Vibration and Control of Aero-Propulsion System, Ministry of Education, Northeastern University, Shenyang

[3] Foshan Graduate Innovation School, Northeastern University, Foshan

来源：

Dongbei Daxue Xuebao/Journal of Northeastern University | 2024年 / 45卷 / 12期

关键词：

contact load; fatigue life; modelling; size effect; slewing bearing;

D O I：

10.12068/j.issn.1005-3026.2024.12.010

中图分类号：

学科分类号：

摘要：

Aiming at the problem of size effect in the process of fatigue life analysis of slewing bearings，the fatigue life analysis of slewing bearings is carried out and the influencing law of size effect is studied in depth. By establishing the contact load calculation model and determining the contact force distribution，combined with the Lundberg-Palmgren theory，the fatigue life of slewing bearings with different sizes is calculated. The coupling relationship between ball number and diameter，the influence of raceway center circle diameter and other parameters on the fatigue life of slewing bearings are analyzed，and the size effect of slewing bearings on the fatigue life is discussed，which provides reference for the design and selection of slewing bearings. The results show that reducing the groove curvature coefficient，increasing the contact angle and the raceway center circle diameter can increase the service life of slewing bearings. The influence of ball diameter change on the service life of slewing bearings is greater than that of the change of the raceway center circle diameter，and the increase of contact angle will enhance the size effect，while the increase of groove curvature coefficient will weaken the effect. © 2024 Northeast University. All rights reserved.

引用

页码：1751 / 1758

页数：7

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