止推轴承流体动压润滑失效分析

STUDY ON HYDRODYNAMIC LUBRICATION FAILURE OF THRUST BEARINGS

指出了经典润滑理论无法预测实际止推轴承所存在的润滑失效现象。给出了润滑失效分析的基本理论。讨论了温度引起的润滑失效机理、热流体本构方程和临界膜厚，给出了润滑失效分析理论与试验及其他理论的对比。在此基础上对国内的部分止推轴承和三峡水电站机组止推轴承的设计方案进行了润滑失效分析。

The classical bydrodynamic lubrication theory cannotPredict lubrication failare existing in the engineering used thrustbearings is pointed out that. The basic theory for analysis oflubrication failare is presented. The mechanism of tempeinduced lubrication failure, the theed fluid constitutive and the crihcal film abackness are discussed. The comparison of theresult obtained by the lubrication failare theory with experiments andthe classical lubrication theory is given. SOme domestic thlustbedings and sevens desiring schemes of the thrust bearings for theThree Gorges power station are analyzed.