| 定制边界滑移平行轴承的挤压效应(英文) |
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| 引用本文： | 郭峰,黄柏林,杨沛然.定制边界滑移平行轴承的挤压效应(英文)[J].青岛理工大学学报,2009,30(1). |
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| 作者姓名： | 郭峰 黄柏林 杨沛然 |
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| 作者单位： | 1. 青岛理工大学,摩擦学研究所,青岛,266033
2. 香港城市大学,制造工程与工程管理学系,中国香港 |
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| 基金项目： | Supported by Programfor New Century Excellent Talents in University,Ministry of Education of China(NCET-07-047450875136) |
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| 摘 要： | 作者最近提出了一种利用滑块入口处的壁面滑移产生流体动压的新型轴承.笔者针对该类新轴承的油膜挤压问题,提出了基于滑移临界剪应力的数学模型,并给出了解析解.结果显示压力分布为分段光滑的抛物线,在滑移/非滑移边界,存在不连续的压力梯度.不同参数条件下的计算给出了不同的压力分布和壁面滑移类型.结果显示,对于代表滑块非浸润区长度的参数xt,最大压力并不总是随参数xt的减小而减小.存在一个参数xt的区间,在该区间内最大压力不变.与经典的挤压膜轴承类似,压力随膜厚的增加或趋进速度的减小而减小.笔者还发现临界剪应力的对挤压效应有重要的影响,揭示了此类新型轴承的一些内在的特性.
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| 关 键 词： | 壁面滑移 动压润滑 挤压效应 临界剪切应力 |
Squeeze Effect of a Parallel Surface Bearing with Tailored Boundary Slippage |
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| GUO Feng,WONG Pat Lam,YANG Pei-ran.Squeeze Effect of a Parallel Surface Bearing with Tailored Boundary Slippage[J].Journal of Qingdao Technological University,2009,30(1). |
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| Authors: | GUO Feng WONG Pat Lam YANG Pei-ran |
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| Affiliation: | 1.Institute of Tribology;Qingdao Technological University;Qingdao 266033;China;2.Department of Manufacturing Engineering and Engineering Management;City University of Hong Kong;Hong Kong;China |
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| Abstract: | The authors recently proposed an approach to generating hydrodynamic lubrication by wall slippage in the inlet of the stationary bearing slider.In this paper,a mathematical model with a critical shear-stress criterion of slippage is presented to describe the squeeze film effect of this newly devised device,and an analytical solution is obtained.It is shown that the pressure distribution is a piecewise parabolic curve,and the pressure gradient can be discontinuous at the border of the slip and no-slip region... |
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| Keywords: | wall slippage hydrodynamic lubrication squeeze effect critical shear stress |
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