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| 计入气穴影响的径推联合动静压浮环轴承稳定性研究 | |
| 引用本文： | 郭红,来新民,岑少起.计入气穴影响的径推联合动静压浮环轴承稳定性研究[J].润滑与密封,2009,34(9). |
| 作者姓名： | 郭红 来新民 岑少起 |
| 作者单位： | 1. 上海交通大学机械与动力工程学院,上海,200030;郑州大学机械工程学院,河南郑州,450001 2. 上海交通大学机械与动力工程学院,上海,200030 3. 郑州大学机械工程学院,河南郑州,450001 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 研究了计入气穴影响的径推联合动静压浮环轴承的动态性能和稳定性.给出了控制径推联合浮环动静压轴承内、外膜的气油两相流变密度、变黏度无量纲动态Reynolds方程及压力边界条件和深腔流量平衡方程;用有限元法对不同转速、不同偏心率下含气率为0和0.1的内外油膜进行了有限元计算,得到各部分的刚度系数和阻尼系数;计算了该径推浮环轴承的稳定性参数.结果表明:气穴使得径向、推力内外层油膜的刚度系数和阻尼系数均有所下降,随着偏心率的增大及转速的提高,气穴的影响程度减小;气穴使得轴承的无量纲临界转子质量降低,因此在供油压力急剧变化时必须考虑气穴的影响. |
| 关 键 词： | 气穴 动静压浮环轴承 刚度系数 阻尼系数 稳定性 |
A Stability Analysis for a Journal-thrust Hybrid Floating Ring Bearing with the Cavitations Influence |
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| Guo Hong,Lai Xinmin,Cen Shaoqi.A Stability Analysis for a Journal-thrust Hybrid Floating Ring Bearing with the Cavitations Influence[J].Lubrication Engineering,2009,34(9). | |
| Authors: | Guo Hong Lai Xinmin Cen Shaoqi |
| Affiliation: | 1.School of Mechanical Engineering;Shanghai Jiaotong University;Shanghai 200030;China;2.School of Mechanical Engineering;Zhengzhou University;Zhengzhou Henan 450001;China |
| Abstract: | The dynamic performance and stability of a externally pressurized hybrid journal-thrust floating ring bearing were studied considering the cavitations in deep pockets.The cylinder coordinates dimensionless Reynolds equations governing the inner and outer film of this hybrid floating-ring bearing were developed.The physical model about the two-phase flow of bubbly oil was introduced. The Reynolds equations of the variable density and viscosity with inertia term together with the pressure boundary condition a... |
| Keywords: | cavitations hybrid floating ring bearing stiffness coefficient damping coefficient stability |
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