| 微极性流体润滑的挤压膜轴承特性研究 |
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| 引用本文： | 张俊岩,王晓力.微极性流体润滑的挤压膜轴承特性研究[J].北京理工大学学报,2009,29(9):771-775. |
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| 作者姓名： | 张俊岩 王晓力 |
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| 作者单位： | 北京理工大学,机械与车辆学院,北京,100081;北京理工大学,机械与车辆学院,北京,100081 |
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| 基金项目： | 国家自然科学基金资助项目，国家教育部"111"创新引智计划项目 |
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| 摘 要： | 对微极性流体润滑的纯挤压膜径向轴承的特性进行了研究. 求解了基于微极性流体理论的雷诺方程和轴心非线性运动方程,将微极性流体特征尺度和耦合数作为微极性效应的主要标志性参数,全面考察了牛顿流体和微极性流体对挤压膜轴承轴心运动规律和润滑性能所产生的影响. 结果表明:微极性流体降低了轴心运动的位移、速度和加速度,使得挤压膜轴承运行更加平稳; 同时减小了最大油膜压力,增大了油膜厚度,因而提高了挤压膜轴承的承载能力.
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| 关 键 词： | 挤压膜 轴承 微极性流体 润滑特性 |
| 收稿时间： | 2008/11/13 0:00:00 |
On the Behavior of Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids |
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| ZHANG Jun-yan and WANG Xiao-li.On the Behavior of Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids[J].Journal of Beijing Institute of Technology(Natural Science Edition),2009,29(9):771-775. |
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| Authors: | ZHANG Jun-yan and WANG Xiao-li |
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| Institution: | ZHANG Jun-yan,WANG Xiao-li(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | The behavior of pure squeeze film lubrication of journal bearings with micropolar fluids is studied.Modified Reynolds equation based on the theory of micropolar fluids is solved together with the nonlinear motion equation of the journal center.The size of material characteristic length and the coupling number are used as the symbolized parameters of the micropolar fluids.Comprehensive comparisons are made between the Newtonian fluids and the micropolar fluids for the effects on the dynamic behavior of the j... |
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| Keywords: | squeeze film journal bearing micropolar fluids lubrication performance |
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