Finite element simulation of subsurface initiated damage from non-metallic inclusions in wind turbine gearbox bearings

被引：24
|
作者：
Al-Tameemi, Hamza A. [1 ,2 ]
Long, Hui [2 ]
机构：
[1] Univ Baghdad, Dept Mech Engn, Baghdad, Iraq
[2] Univ Sheffield, Dept Mech Engn, Sheffield, S Yorkshire, England
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2020年 / 131卷 / 131期
关键词：
White etching cracks; Wind turbine gearbox bearing; Non-metallic inclusions; Finite element modelling; Surface traction; Torque reversal; WHITE ETCHING CRACKS; CONTACT;
D O I：
10.1016/j.ijfatigue.2019.105347
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The premature failure of wind turbine gearbox bearings significantly affects the reliability of wind turbine operation and energy production. Damage initiated from non-metallic inclusions known as White Etching Cracks (WECs) has been identified as the dominant initiation mechanism that causes the premature failure under the influence of transient events. In this study, the factors affecting the initiation of subsurface damage from nonmetallic inclusions were investigated by finite element modelling. It was found that the direction of surface traction and loading-unloading cycle had a detrimental effect on stress concentration at the tips of the de-bonded non-metallic inclusions in bearing steel.
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页数：11
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