水润滑动静压陶瓷轴承的热弹流润滑分析

发布时间：2018-06-19 00:51

本文选题：水润滑 + 动静压　；参考：《机械传动》2017年10期

【摘要】：建立了水润滑动静压陶瓷轴承的弹流润滑几何模型,采用考虑了热效应的Reynolds方程,对水润滑动静压陶瓷轴承进行考虑热效应时的弹流理论分析。研究了不同工况下供水压力对水润滑动静压陶瓷轴承的压力膜厚影响,分析了不同工况下润滑膜局部最高温度出现的区域,得到了速度、载荷对水润滑动静压陶瓷轴承润滑膜温度控制的协同作用曲线。结果显示,初始供水压力的静压效应有利于轴承润滑,初始供水压力增大,润滑膜膜厚增大,不同工况下压力变化趋势不同;不同工况下,润滑膜局部最高温度的区域发生变化;当润滑膜局部最高温度保持在一个定值时,不同的速度和载荷组合对润滑膜局部温度控制呈现反相关的协同作用,并且在不同工况下,速度、载荷的相关性变化趋势不同。
[Abstract]:A geometric model of elastohydrodynamic lubrication for hydrostatic bearing was established. The elastohydrodynamic theory of hydrostatic bearing with thermal effect was analyzed by Reynolds equation. The influence of water supply pressure on the pressure film thickness of hydrostatic sliding ceramic bearing under different working conditions was studied. The local maximum temperature of lubricating film was analyzed under different working conditions and the velocity was obtained. Synergistic effect curve of load on temperature control of lubricating film of hydrostatic sliding ceramic bearing. The results show that the static pressure effect of initial water supply pressure is favorable to bearing lubrication, the initial water supply pressure increases, the film thickness of lubrication film increases, and the pressure varies under different working conditions. When the local maximum temperature of lubricating film is kept at a fixed value, the local temperature of lubrication film is controlled by different speed and load combination, and under different working conditions, the local temperature of lubricating film is controlled by different speed and load combination. The variation trend of the correlation between speed and load is different.
【作者单位】：青岛理工大学机械工程学院;
【基金】：国家自然科学基金(51575289、51705270) 山东省自然科学基金培养基金(2016ZRB01AJX)
【分类号】：TH133.3

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