水润滑动静压滑动轴承的临界温度研究

发布时间：2019-06-06 10:59

【摘要】：建立水润滑动静压滑动轴承的弹流润滑几何模型,采用考虑热效应的Reynolds方程,对水润滑动静压滑动轴承进行弹流理论分析,计算一定供水压力下当润滑剂局部最高温度达到临界值时不同的速度、载荷极限值;分析润滑介质、轴瓦材料以及供水压力变化对速度、载荷达到极限值时的临界温度曲线的影响,得到润滑剂局部最高温度达到临界温度时的轴承速度和载荷极限值的临界温度曲线,并通过拟合得到曲线的函数表达式。研究结果显示:海水润滑下的临界温度曲线高于纯水润滑,塑料轴瓦的临界温度曲线高于陶瓷轴瓦;供水压力对不同轴瓦材料的临界温度曲线变化趋势影响不同,对不同润滑介质的临界温度曲线的变化范围影响不同。
[Abstract]:The geometric model of Elastohydrodynamic lubrication of water-lubricated hydrostatic sliding bearing is established, and the elastohydrodynamic theory of water-lubricated sliding hydrostatic sliding bearing is analyzed by using Reynolds equation considering thermal effect. Under certain water supply pressure, when the local maximum temperature of lubricant reaches the critical value, the load limit value is calculated. The influence of lubrication medium, bearing material and water supply pressure on the critical temperature curve when the speed and load reaches the limit value is analyzed. The critical temperature curves of bearing speed and load limit value when the local maximum temperature of lubricant reaches critical temperature are obtained, and the function expression of the curve is obtained by fitting. The results show that the critical temperature curve of seawater lubrication is higher than that of pure water lubrication, and the critical temperature curve of plastic bearing is higher than that of ceramic bearing. The influence of water supply pressure on the critical temperature curve of different bearing materials is different, and on the variation range of critical temperature curve of different lubricating media is different.
【作者单位】：青岛理工大学机械工程学院;
【基金】：国家自然科学基金项目(51575289) 山东省自然科学基金培养基金项目(2016ZRB01AJX)
【分类号】：TH133.31

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