Lubrication reliability analysis of spur gear systems based on random dynamics

被引:15
|
作者
Pei, Jiaxing [1 ,2 ]
Han, Xu [1 ,2 ]
Tao, Yourui [1 ,2 ]
Feng, Shizhe [1 ,2 ]
机构
[1] HeBei Univ Technol, State Key Lab Reliabil & Intelligence Elect Equip, Tianjin 300401, Peoples R China
[2] HeBei Univ Technol, Sch Mech Engn, Tianjin 300401, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
Elastohydrodynamic lubrication; Lubrication reliability; Stochastic dynamics; Gear systems; ELASTOHYDRODYNAMIC LUBRICATION; NONLINEAR DYNAMICS; MODEL; PERFORMANCE; OSCILLATOR; PREDICTION; CLEARANCE; STIFFNESS; BEHAVIOR;
D O I
10.1016/j.triboint.2020.106606
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
An approach for lubrication reliability analysis of spur gear systems considering the randomness of external load and surface roughness is presented. The instantaneous failure probability of gear lubrication is captured by a gear stochastic dynamics model and a reliability model of elastohydrodynamic lubrication (EHL). The stochastic dynamics model is adopted to obtain the numerical characteristics of meshing force. The reliability model is established based on a mixed EHL line contact film thickness formula. The first-order second-moment method is employed for predicting failure probability of lubrication. The lubrication reliability of a gear pair excited by different intensity random load is studied. The results show that the lubrication failure probability in dedendum and single meshing region are higher than addendum.
引用
收藏
页数:10
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