球(数学)
机制(生物学)
材料科学
可靠性(半导体)
失效机理
结构工程
疲劳试验
可靠性工程
复合材料
工程类
数学
物理
几何学
热力学
功率(物理)
量子力学
作者
Hongchuan Cheng,Xinhai Li,Guansheng Ma,Xiafei Shi,Yang Zhou
摘要
Abstract As the main supporting parts of rotating machinery, the fatigue life and fatigue reliability of ball bearings directly affect the accuracy, stability and reliability of equipment. Based on the quasi-static model of bearing and the fatigue life theory, this paper analyzes the effect of the spatial position of rolling element on the mechanical properties and fatigue life of bearing, and studies the action mechanism of bearing working conditions and other parameters. In addition, based on the stress-strength model and the fatigue life model of bearing, the fatigue reliability and sensitivity of bearings are analyzed by means of perturbation method, Edgeworth series and fourth moment technique, and the correctness is verified by the Monte Carlo simulation. Results have important theoretical and practical value, and can provide theoretical support for the research of reliability optimization design, fault mechanism and fault diagnosis method of ball bearings.
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