Effect of surface topography associated with arbitrary velocity direction on the lubrication film thickness in elliptical contacts
Effect of surface topography associated with arbitrary velocity direction on the lubrication film thickness in elliptical contacts
复制标题
与任意速度方向相关的表面形貌对椭圆接触润滑膜厚度的影响
DOI：
10.1108/ilt-09-2016-0206
复制
发表时间：
2018-01-01
影响因子：
1.6
通讯作者：
Li, Junyang
中科院分区：
文献类型：
--
作者：
Pu, Wei;Wang, Jiaxu;Li, Junyang
目的-本研究的目的是描述和观察的表面形貌与任意方向的滚动和滑动速度的润滑膜的性能在椭圆contacts.Design/方法/途径的影响-最近出版的混合弹性流体动力学（EHL）模型蒲和朱。讨论了三种不同的加工粗糙表面，在分析的情况下，表面速度的相关倾斜角从0度到90度变化。这些情况下进行了在很宽的速度范围内（五个数量级），而模拟的润滑条件覆盖全膜和混合EHL下降到边界lubrication.Findings -结果表明，对应于不同的卷吸角的平均膜厚度的变化是不同的，而不考虑表面粗糙度。此外，表面形貌似乎有一个巨大的影响上的润滑膜厚度在exceptive situation.Originality/值-这篇论文还没有发表过。由于表面粗糙度对润滑性能的重要影响，多年来一直受到人们的关注。然而，以往的研究主要集中在表面速度与接触区主轴方向相同的反形接触。在准双曲面齿轮、蜗杆等零件中，滚动速度和滑动速度方向任意的特殊情况很少引起人们的注意。本研究的目的是描述和观察与任意方向的滚动和滑动速度的润滑膜在椭圆接触的性能的表面形貌的效果的基础上，最近出版的混合EHL模型的浦和朱。
Purpose - The purpose of this study is to describe and observe the effect of surface topography associated with arbitrary directions of rolling and sliding velocities on the performance of lubricating films in elliptical contacts.Design/methodology/approach - The most recently published mixed elastohydrodynamic (EHL) model by Pu and Zhu is used. Three different machined rough surfaces are discussed and the correlated inclined angle of surface velocity varies from 0 degrees to 90 degrees in the analyzed cases. These cases are carried out in a wide range of speeds (five orders of magnitude) while the simulated lubrication condition covers full-film and mixed EHL down to the boundary lubrication.Findings - The results indicate that the variation of the average film thickness corresponding to different entrainment angles is distinct from those without considering surface roughness. In addition, the surface topography appears to have an immense effect on the lubrication film thickness in the exceptive situation.Originality/value - This paper has not been published previously. Surface roughness has attracted much attention for many years owing to the significant influence on lubricating property. However, previous studies mainly focus on the counterformal contact with the same direction between surface velocity and principal axis of the contact zone. Little attention has been paid to the specific condition with the arbitrary direction of rolling and sliding velocities found in hypoid gears and worm, and some other components. The purpose of this study is to describe and observe the effect of surface topography associated with arbitrary directions of rolling and sliding velocities on the performance of lubricating films in elliptical contacts based on the most recently published mixed EHL model by Pu and Zhu.