载荷对油膜界面滑移及弹流润滑特性的影响研究OA北大核心CSTPCD

In order to explore formation and evolution mechanism of lubrication failure of friction pair in mechanical transmission system under harsh working conditions,a point contact elastohydro-dynamic lubrication model was established considering oil film interface slip,and simulation calcula-tion was carried out.The two-color light interference elastohydrodynamic lubrication test was carried out to study the influences of load on oil film interface slip in elastohydrodynamic lubrication,and then variation characteristics of entrainment velocity,hydrodynamic pressure,oil film thickness and slip parameters with load were studied under interface slip state.The results show that with the in-crease of load,the slip amplitude and slip range of interface increase significantly and the entrainment velocity in slip region decreases obviously.The dynamic pressure distribution in slip region tends to be uniform.In addition,slip region produces film thickness accumulation and inlet depression character-istics.The shape of slip region gradually presents the characteristics of"half crescent".