Fatigue reliability evaluation method for gearbox component and system of wind turbine

被引：0

作者：

Xie, Liyang ^{[1
]}

Liu, Jianzhong ^{[2
]}

Wu, Ningxiang ^{[1
]}

Qian, Wenxue ^{[1
]}

机构：

[1] College of Mechanical Engineering and Automation, Northeastern University

[2] AVIC Beijing Institute of Aeronautical Materials

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2014年 / 50卷 / 11期

关键词：

Complex load history; Cumulative fatigue damage; Life distribution parameter estimation; Reliability; Wind turbine;

D O I：

10.3901/JME.2014.11.001

中图分类号：

学科分类号：

摘要：

Load is the most direct factor to cause failure and affect product reliability. The load history that a wind turbine experienced has some special characteristic. Owing to the special service mode, the every wind turbines in a wind farm will experience different load histories. The probabilistic property of wind turbine load history is described in two aspects as the every turbine's service location and service time. Based on such description, fatigue reliability analysis and modeling of wind turbine gearbox and its components are performed by means of the total probability principle. As the essential issues to develop fatigue reliability model and perform reliability evaluation, the way to characterize load history uncertainty, the methods to accumulate the fatigue damage under variable amplitude load history and calculate the equivalent stress amplitude, the way to develop fatigue reliability model based on stress distribution and life distribution condition to stress, as well as the technique to obtain fatigue life distribution parameters through multi-level small sample fatigue life experiment are introduced. © 2014 Journal of Mechanical Engineering.

引用

页码：1 / 8

页数：7

共 21 条

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