Transient elastohydrodynamic analysis of rough surfaces using a novel coupled differential deflection method
Transient elastohydrodynamic analysis of rough surfaces using a novel coupled differential deflection method
复制标题
使用新颖的耦合微分偏转法对粗糙表面进行瞬态弹流动力学分析
DOI：
10.1243/1350650011543574
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
R. W. Snidle
中科院分区：
文献类型：
--
作者：
C. Elcoate;H. P. Evans;T. G. Hughes;R. W. Snidle
本文提出了一种线接触弹流润滑问题的瞬态分析方法，该方法采用弹性和流体动力学耦合方程。全耦合是可能的，通过使用一种新的差分偏转制定。润滑剂被视为非牛顿流体，剪切应力和剪切应变率之间具有非线性的Eyring型关系。结果移动粗糙表面的粗糙度数据是从轮廓仪运行在地面上的痕迹。一个完整的范围内的滑动滚动比已被认为是和结果显示为一个粗糙的表面在滚动/滑动运动对一个光滑的表面具有极低的λ比（最小膜间隙比r。M.S.粗糙度）。结果也显示了两个粗糙的表面接触下，严重的薄膜高粗糙度的条件。
Abstract The paper presents a transient analysis technique for line contact elastohydrodynamic lubrication problems using coupled elastic and hydrodynamic equations. Full coupling is made possible by use of a novel differential deflection formulation. The lubricant is treated as non-Newtonian with a non-linear Eyring-type relationship between shear stress and shear strain rate. Results are presented for moving rough surfaces where the roughness data are taken from profilometer traces of run-in ground surfaces. A complete range of slide-roll ratios has been considered and results are shown for one rough surface in rolling/sliding motion against a smooth surface with extremely low lambda ratios (ratio of minimum film clearance to r. m.s. roughness). Results are also shown for two rough surfaces in contact under severe thin-film high-roughness conditions.