| 脂润滑轮毂轴承弹流润滑数值分析 |
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| 引用本文： | 邓磊,于玫,黎桂华,刘小康,黄平.脂润滑轮毂轴承弹流润滑数值分析[J].润滑与密封,2009,34(10). |
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| 作者姓名： | 邓磊 于玫 黎桂华 刘小康 黄平 |
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| 作者单位： | 1. 华南理工大学机械工程学院,广东广州,510640
2. 华南理工大学机械工程学院,广东广州,510640;韶关东南轴承有限公司,广东韶关,512029 |
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| 基金项目： | 广东省科技计划项目(2008B010400030) |
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| 摘 要： | 基于Ostwald模型建立脂润滑控制方程,运用多重网格法求得等温线接触脂润滑弹性流体动力润滑数值解,得到钢球-沟道的压力分布、油膜形状及最小油膜厚度。针对轿车轮毂轴承的典型应用工况条件,分析工况参数对油膜压力分布和油膜形状的影响。结果表明:脂润滑弹流膜具有与油润滑膜相同的二次压力峰和出口颈缩现象。在轿车轮毂轴承可能的承载条件下,随着载荷的减小,二次压力峰的高度降低,其位置向入口区移动;一定承载条件下,速度增加时,膜厚相应增加,油膜的平行部分缩短,二次压力峰的高度增加,其位置也向入口区移动;一定承载和卷吸速度下,润滑脂流变参数增大时,二次压力峰的高度升高,其位置向入口区移动,膜厚相应增加。
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| 关 键 词： | 轿车轮毂轴承 弹性流体动力润滑 脂润滑 多重网格法 |
Numerical Analysis on Elastohydrodynamic Lubrication of Automotive Wheel Bearings Lubricated with Grease |
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| Deng Lei,Yu Mei,Li Guihua,Liu Xiaokang,Huang Ping.Numerical Analysis on Elastohydrodynamic Lubrication of Automotive Wheel Bearings Lubricated with Grease[J].Lubrication Engineering,2009,34(10). |
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| Authors: | Deng Lei Yu Mei Li Guihua Liu Xiaokang Huang Ping |
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| Affiliation: | 1.School of Mechanical Engineering;South China University of Technology;Guangzhou Guangdong 510640;China;2.Shaoguan Southeast Bearing Co.;Ltd;Shaoguan Guangdong 512029;China |
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| Abstract: | The constitutive equation of grease lubrication based on the Ostwald model was established and the numerical solution of isothermal line contact grease elastohydrodynamic lubrication was calculated with multiple-grid method.Oil film shape,pressure distribution and minimum film thickness of ball-channel were obtained.Effect of parameters on lubrication film shape and pressure distribution was analyzed for the typical working conditions of automotive wheel bearings.Results show that grease elastohydrodynamic ... |
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| Keywords: | automotive wheel bearing elastohydrodynamic lubrication grease lubrication multi-grid method |
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