一种齿轮齿根弯曲疲劳寿命预测方法  

Method of Predicting Bending Fatigue Life of the Gear Root

作　　者：时宏森 唐超 蔡大静 SHI Hongsen;TANG Chao;CAI Dajing(Guizhou Spaceflight Linquan Electric Machine Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]贵州航天林泉电机有限公司,贵州贵阳550081

出　　处：《新技术新工艺》2022年第11期72-76,共5页New Technology & New Process

摘　　要：传统的齿轮设计方法是将齿轮轮齿简化为简单的悬臂梁,在单个轮齿上进行受力分析,确定齿轮的负载水平。把齿轮的负载平均到单个齿轮上进行简化计算,得到的计算结果偏于保守。借助于ANSYS Workbench软件,首先进行齿轮啮合的瞬态动力学仿真,得到准确的应力/应变-时间历程响应。同时,考虑实际齿轮的齿形应力集中、轮齿大小,以及齿面加工质量等,对材料的S-N曲线进行修正,得到轮齿的S-N曲线,结合齿轮的应力/应变-时间历程响应,即可预测齿轮的使用寿命。The traditional gear design method was to simplify the gear tooth into a simple cantilever beam,we analyzed the force on a single tooth,and determined the load level of the gear.When the load of gears was averaged to a single gear for simplified calculation,the calculation results would be conservative.With the help of ANSYS Workbench software,the transient dynamic simulation of gear meshing was carried out,and the accurate root stress/strain time response cycle curve was obtained.At the same time,the S-N curve of the material was modified and the S-N curve of the gear was obtained by considering the stress concentration of the tooth profile,the size of the tooth profile and the surface processing quality of the actual gear.Combined with the stress/strain time response,the service life of the gear could be estimated.

关 键 词：齿轮 齿根弯曲 疲劳寿命 瞬态动力学 ANSYS Workbench 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]