摘要
通过等温富油工况下滚子摩擦副弹流数值解研究表明,工程对数滚子具有良好的润滑特性,轻载时呈现大椭圆比点接触的特征,最小油膜厚度出现在中部,轴向油膜形状和压力分布比较均匀.载荷增大端部出现闭合效应,油膜压力局部升高,形成的封油作用使中部油膜略微增厚,最小油膜厚度转移至端部,厚度减小;
The research on isothermal and flooded elastohydrodynamic lubrication of the roller contacts has shown that the finite cylindrical roller profiled by an engineering logarithmic will provide with good EHL properties. Under light loading, it is of EHL features of point contacts with a large ellipticity ratio. The minimum film thickness appears in the central part of the roller contacts. The pressure and the shape of the film distribute much uniformly in axial direction. With the increase of the load, the end closure is displayed and the oil pressure rises sharply at the ends. The seal action formed by the end closure makes the film thickness a little bit larger. With the load increasing, the minimum film thickness is transferred from the central to the ends and the value is reduced rapidly. With the increase of the speed, the end closure becomes much serious.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2000年第1期63-66,共4页
Tribology
基金
国家自然科学基金!资助项目(59475037)
关键词
工程对数凸型
弹流润滑
滚子摩擦副
润滑
finite line contact
profile design
engineering logarithmic profile
EHL
side leakage
end closure
