| 高速水润滑止推轴承的滑移润滑性能研究 |
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| 作者姓名： | 汪双华 曾良才 吴振鹏 湛从昌 |
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| 作者单位： | 武汉科技大学;武汉科技大学冶金装备及其控制教育部重点实验室;武汉科技大学机械传动与制造工程湖北省重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(51475338,0,51705377). |
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| 摘 要： | 建立了多种具有不同滑移区域分布特征的推力瓦数学模型,在考虑流体边界滑移效应、扩展了经典Reynolds方程并设定合理边界条件的基础上,借助MATLAB软件对模型进行数值仿真求解,研究了滑移区域分布方式、面积占比及滑移长度对轴承动压润滑性能的影响。结果表明,在靠近流场入口处沿周向分布滑移区域能显著提升不同转速条件下的推力瓦面承载力;当滑移区域面积占瓦面面积比介于0.3~0.4且滑移长度为1000nm时,轴承推力瓦面具有最优动压润滑性能。
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| 关 键 词： | 止推轴承 滑移/非滑移异质界面 动压润滑 承载力 摩擦因数 润滑性能 |
| 收稿时间： | 2018/6/20 0:00:00 |
Slip lubrication performance of high speed water-lubricated thrust bearing |
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| Authors: | Wang Shuanghu Zeng Liangcai Wu Zhenpeng and Zhan Congchang |
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| Institution: | 1.Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;2.Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;,1.Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;2.Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;,1.Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;2.Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China; and 1.Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;2.Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China; |
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| Abstract: | Various mathematical models of thrust pads with different sliding area distributions were established.Based on the extended Reynolds equation obtained by taking account of the fluid boundary slip effect and reasonable boundary conditions,the models were numerically calculated by means of MATLAB and the influence of sliding area distribution, area ratio and slip length on bearing hydrodynamic lubrication was studied. The results show that the bearing capacity of thrust pads at different speeds increases obviously by the sliding zone distributed along the circumference near the inlet of the flow field. When the area ratio of sliding zone is between 0.3 and 0.4 and slip length is 1000 nm, the thrust pad shows the best hydrodynamic lubrication performance. |
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| Keywords: | thrust bearing heterogeneous slip/non-slip surface hydrodynamic lubrication bearing capacity friction coefficient lubrication performance |
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