Fatigue life analysis of wind turbine gear with oxide inclusion

2020 ◽  
Author(s):  
Ran Liu ◽  
Dexin Sun ◽  
Junling Hou ◽  
Fengjun Liu ◽  
Qun Li
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Oxide Inclusion ◽  
Life Analysis ◽  
Fatigue Life Analysis

Fatigue life analysis of double-row tapered roller bearing in a modern wind turbine under oscillating external load and speed

2020 ◽  
Vol 234 (15) ◽  
pp. 3116-3130 ◽  
Author(s):  
Jingyang Zheng ◽  
Jinchen Ji ◽  
Shan Yin ◽  
Van-Canh Tong
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
External Load ◽  
Roller Bearing ◽  
Direct Drive ◽  
Double Row ◽  
Tapered Roller Bearing ◽  
Tapered Roller ◽  
Life Analysis ◽  
Fatigue Life Analysis

Fatigue life analysis of roller bearing is usually performed for bearings under constant rotating speed and invariant loading conditions. For the bearings used in offshore floating direct-drive wind turbines, they often experience oscillating motions with varying loading patterns, for which the standard fatigue life analysis is not valid due to the presence of fluctuating loads. This paper presents the fatigue life analysis of a double-row tapered roller bearing under oscillating external load and speed conditions, which is used to support the main shaft of a large modern direct-drive wind turbine. First, a comprehensive quasi-static model of the double-row tapered roller bearing is developed for determining the internal load distribution of rollers. The contact pressure of rollers is then studied using an iterative scheme based on the elastic contact model. After that, the formulation of basic rating life of the double-row tapered roller bearing with oscillating external load and speed is given to calculate the fatigue life. Numerical simulations are carried out to investigate the effects of the oscillating load and speed, angular misalignment, and internal clearance on the fatigue life of the bearing.

Load Spectrum and Fatigue Life Analysis of the Blade of Horizontal Axis Wind Turbine

2003 ◽  
Vol 27 (6) ◽  
pp. 495-506 ◽  
Author(s):  
Li Deyuan ◽  
Ye Zhiquan ◽  
Chen Yan ◽  
Bao Nengsheng
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Horizontal Axis ◽  
Load Spectrum ◽  
Horizontal Axis Wind Turbine ◽  
Life Analysis ◽  
Fatigue Life Analysis

Fatigue Life Analysis of Longitudinal Welding Seam for Wind Turbine Tower

2020 ◽  
Vol 25 (2) ◽  
pp. 261-265
Author(s):  
Wenqiang Guo ◽  
Pengwen Sun ◽  
Lei Niu ◽  
Zongtao Wang
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Welding Seam ◽  
Wind Turbine Tower ◽  
Life Analysis ◽  
Fatigue Life Analysis

Bending Fatigue Life Analysis of Carburized Components Using Strain Life and Fracture Mechanics Approaches

2003 ◽  
Author(s):  
Hong Lin ◽  
Gregory A. Fett ◽  
Robert R. Binoniemi
Keyword(s):  
Fatigue Life ◽  
Fracture Mechanics ◽  
Bending Fatigue ◽  
Life Analysis ◽  
Fatigue Life Analysis

Fatigue life analysis of shot-peened bearing steel

2012 ◽  
Vol 26 (6) ◽  
pp. 1747-1752 ◽  
Author(s):  
Sang-Jae Yoon ◽  
Jung-Hoon Park ◽  
Nak-Sam Choi
Keyword(s):  
Fatigue Life ◽  
Bearing Steel ◽  
Life Analysis ◽  
Fatigue Life Analysis
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