Linear complementarity solution of 2D boundary slip EHL contact
Linear complementarity solution of 2D boundary slip EHL contact
复制标题
二维边界滑移EHL接触的线性互补解
DOI：
10.1016/j.triboint.2020.106178
复制
发表时间：
2020-05-01
影响因子：
6.2
通讯作者：
Guo, L.
中科院分区：
文献类型：
--
作者：
Zhao, Y.;Wong, P. L.;Guo, L.
最近的研究证明，亲油（无滑移）表面与疏油（滑移）表面的滑动可以大大减少轴承摩擦。本文研究了滑移/无滑移概念在二维弹性流体动力润滑（EHL）问题中的适用性。采用临界剪应力滑移模型，对纯轧制条件下等温EHL点接触进行了数值分析。利用线性互补原理解决了二维问题中在达到临界剪应力值时确定滑移方向的难题。从膜厚和摩擦两方面评价了边界滑移对轴承性能的影响。
Recent researches proved that bearing friction can be largely reduced with an oleophilic (no-slip) surface sliding against an oleophobic (slip) surface. The present work investigates the applicability of the slip/no-slip concept to 2D elastohydrodynamic lubrication (EHL) problems. Numerical analysis of isothermal EHL point contact is conducted under pure rolling conditions with the critical shear stress slip model. The challenge of determining the slip direction upon the attainment of the critical shear stress value in 2D problems is resolved by using a linear complementarity principle. The effect of boundary slip on bearing performance in terms of film thickness and friction is evaluated.