基于疲劳失效的行星齿轮减速器时变可靠性分析  

Time-varying Reliability Analysis of Planetary Gear Reducers Based on Fatigue Failure

作　　者：骆训雕 刘赣华[1] Luo Xundiao;Liu Ganhua(School of Mechanical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学机电工程学院,江西赣州341000

出　　处：《机械传动》2024年第1期99-104,共6页Journal of Mechanical Transmission

基　　金：江西省教育厅科学研究项目(GJJ180454)。

摘　　要：随着科技革新与社会发展,对行星齿轮减速器的可靠性要求越来越高。行星齿轮减速器运行过程中存在疲劳因素,会导致可靠度发生变化。针对这一问题,首先,根据应力-强度干涉理论,构建行星齿轮减速器在疲劳失效(主要是齿面接触疲劳失效和齿根弯曲疲劳失效)下的时变可靠性模型;其次,结合单调性定理,将时变可靠性模型简化,利用Matlab编程,求解了行星齿轮减速器的可靠度;对时变可靠性模型的各变量进行了灵敏度分析;最后,以PM90精密行星齿轮减速器为例,分别得到基于疲劳失效下的可靠度和各变量的灵敏度,阐述了在接触疲劳失效和弯曲疲劳失效下的可靠性时变规律,为行星齿轮减速器的时变可靠性分析奠定了基础。With technological innovation and social development,the reliability of planetary gear reducers is required to be higher and higher.However,the reliability of planetary gear reducers changes due to fatigue factors in its operation.To solve this problem,firstly,according to the stress-strength interference theory,the time-varying reliability model of planetary gear reducers under fatigue failure(mainly tooth surface contact fatigue failure and tooth root bending fatigue failure)is constructed.Secondly,combined with the monotone theorem,the time-varying reliability model is simplified,and the reliability of planetary gear reducers is solved by Matlab programming.The sensitivity of each variable of the time-varying reliability model is analyzed.Finally,taking PM90 precision planetary gear reducer as an example,the reliability and sensitivity of each variable based on fatigue failure are obtained respectively,and the time-varying law of reliability under contact fatigue failure and bending fatigue failure is expounded,which lays the foundation for the time-varying reliability analysis of planetary gear reducers.

关 键 词：行星齿轮减速器 疲劳失效 时变可靠性 灵敏度分析 

分 类 号：TH132.46[机械工程—机械制造及自动化] TB114.3[理学—概率论与数理统计]