纳米级润滑膜的粘度修正与薄膜润滑计算  

VISCOSITY MODIFICATION AND ITS APPLICATION IN COMPUTATION UNDER THIN FILM LUBRICATION STATE

作　　者：张朝辉[1] 雒建斌[1] 温诗铸[1] 

机构地区：[1]清华大学精仪系,北京100084

出　　处：《机械工程学报》2001年第1期42-45,共4页Journal of Mechanical Engineering

基　　金：国家自然科学基金和杰出青年科学基金! (5 0 0 2 5 5 15 )资助项目(5 973 5 110 )

摘　　要：根据纳米级润滑膜的试验测试结果提出薄膜润滑状态的粘度修正公式 ,并在此基础上建立了润滑膜厚度计算的数值计算方程。将该数值计算结果与弹流理论计算值和试验值进行对比表明 ,在薄膜润滑条件下 ,膜厚与速度和润滑油粘度的关系与弹流润滑计算结果相差较大 ,可明显看出弹流润滑向薄膜润滑的过渡 。The viscosity modification formula has been proposed on the base of data obtained from experimental results in thin film lubrication regime, on which the equations for computing film thickness in the contact region are got. The comparison among the results coming from the calculation results of thin film lubrication (TFL), elastohydrodynamic lubrication (EHL) and experimental data shows that the relationships of film thickness vs.velocity & viscosity in TFL are much different from that in EHL and our calculated results accord with the experimental data well. Moreover, the transition from EHL to TFL is also obvious in the calculated curve.

关 键 词：薄膜润滑 粘度修正 膜厚计算 纳米级润滑膜 

分 类 号：TH117.2[机械工程—机械设计及理论]