华中科技大学学报（自然科学版）2025，Vol.53Issue(12)：67-75,9.DOI:10.13245/j.hust.251209
考虑弹流润滑的变位行星齿轮传动动态特性分析
Analysis of dynamic characteristics of profile shifted planetary gear transmission considering elastohydrodynamic lubrication
摘要
Abstract
To investigate the dynamics characteristics of profile shifted planetary gears under certain lubrication conditions,a lubrication mathematical model of profile shifted planetary gears was established.The progressive mesh density(PMD)algorithm was introduced,and a method for calculating oil film stiffness and friction coefficient in profile shifted planetary gear transmissions was proposed.The effects of operating conditions,lubrication parameters,and profile shifted coefficients on the lubrication performance,such as oil film stiffness and friction coefficient,were analyzed.A dynamics model of profile shifted planetary gear transmission considering elastohydrodynamic lubrication was developed,and the impact of profile shifted coefficients on its dynamic performance was analyzed in detail.Results show that due to the influence of the comprehensive curvature radius,the oil film stiffness of the sun gear-planet gear meshing pair is generally greater than that of the ring gear-planet gear meshing pair.As the load increases,the presence of the oil film enhances the system's impact resistance.Different profile shifted designs alter the position of the meshing points.During a meshing cycle,when the meshing point is located in the second double-tooth meshing region,the direction of friction does not change;when the meshing point is in the first double-tooth meshing region,the friction direction changes but does not experience a sudden shift;when the meshing point is in the single-tooth meshing region,the friction force undergoes a sudden reversal.Therefore,using an appropriate positive profile shifted design for the sun gear increases the oil film stiffness and meshing overlap of the internal meshing pair,significantly improving the transmission stability of the system.关键词
齿轮动力学/行星齿轮/弹流润滑/油膜刚度/变位系数Key words
gear dynamics/planetary gear/elastohydrodynamic lubrication/oil film stiffness/profile shifted coefficient分类
机械制造引用本文复制引用
SHEN Peng,TAN Laichun,HU Zehua,LIU Wentao,TANG Jinyuan..考虑弹流润滑的变位行星齿轮传动动态特性分析[J].华中科技大学学报（自然科学版）,2025,53(12):67-75,9.基金项目
湖南省自然科学基金资助项目(2023JJ20066) （2023JJ20066）
中国航空发动机集团产学研合作项目(HFZL2023CXY015). （HFZL2023CXY015）
