电缆管道
有限元法
结构工程
方位(导航)
截断(统计)
涡轮机
硬化(计算)
材料科学
工程类
机械工程
数学
计算机科学
复合材料
统计
人工智能
图层(电子)
作者
Shuang Wang,Jing Du,Yiming Chen,WU Shu-qin,Zhegang Huang
标识
DOI:10.1016/j.engfailanal.2022.106711
摘要
As a key component of a wind turbine, the pitch bearing suffers from harsh operating conditions and have to endure complex loads. Due to a large contact angle or load, harmful elliptical truncation may result in stress concentration. However, the influence of elliptical truncation on the performance of the raceway has been rarely studied. This paper investigates the effects of elliptical truncation rates on the raceway surface and subsurface stresses under various loads in a four-point contact pitch bearing. A raceway-ball contact finite element model (FEM) considering raceway hardening is established. The results of a raceway contact experiment which utilizes pressure sensitive films demonstrates the correctness of the FEM. The weakening effect of elliptical truncation on raceway fatigue life is analyzed through three methods. The findings provide an insight for controlling elliptical truncation rate in bearing design and fatigue life assessment to help avoiding raceway crushing and early fatigue failure.
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