期刊
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
卷 45, 期 3, 页码 852-864出版社
WILEY
DOI: 10.1111/ffe.13641
关键词
fatigue damage accumulation; fatigue life prediction; load interaction; load sequence; rolling bearing; variable loading conditions
资金
- National Natural Science Foundation of China [51875089]
This paper proposes a modified nonlinear fatigue damage accumulation model to predict the fatigue life of rolling bearings under variable loading conditions. The results show that the proposed model can more accurately predict the damage accumulation and life compared to existing models.
During the use of rolling bearings in wind turbines, aero engines, and other equipment, they often operate under variable operating and loading conditions. The practice has shown that the sequence of these loads and their interaction has a significant impact on the fatigue life of rolling bearings. In order to better understand this issue, a modified nonlinear fatigue damage accumulation model, which considers the influences of both load sequence and load interaction, is proposed in this paper and verified using the fatigue testing data for six materials. Then, the verified model was applied to evaluate the fatigue damage accumulation and fatigue life of a rolling bearing. The results have shown that, compared with the existing models, the proposed model can more accurately predict the damage accumulation and fatigue life of the rolling bearing under variable loading conditions.
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