Life Distribution Transformation Model of Planetary Gear System

作     者：Ming Li Li-Yang Xie Hai-Yang Li Jun-Gang Ren 

作者机构：Key Laboratory of Vibration and Control of Aviation Propulsion System Ministry of Education Northeastern University 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2018年第31卷第2期

页      面：208-215页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Supported by National Key Technology Research and Development Program of China(Grant No.2014BAF08B01) Natural Science Foundation of China(Grant No.51335003) Collaborative Innovation Center of Major Machine Manufacturing in Liaoning Province of China 

主　　题：Planetary gear system Reliability modeling Probabilistic life Random censoring data 

摘      要：Planetary gear systems have been widely used in transportation, construction, metallurgy, petroleum, aviation and other industrial fields. Under the same condition of power transmission, they have a more compact structure than ordinary gear train. However, some critical parts, such as sun gear, planet gear and ring gear often suffer from fatigue and wear under the conditions of high speed and heavy load. For reliability research, in order to predict the fatigue probability life of planetary gear system, detailed kinematic and mechanical analysis for a planetary gear system is firstly completed. Meanwhile, a gear bending fatigue test is carried out at a stress level to obtain the strength information of specific gears. Then, a life distribution transformation model is established according to the order statistics theory. Transformation process is that, the life distribution of test gear is transformed to that of single tooth, and then the life distribution of single tooth can be effectively transformed to that of the planetary gear system. In addition, the effectiveness of the transformation model is finally verified by a processing method with random censoring data.