自旋对弹流油膜影响的试验研究  

Experimental Study of the Effect of Spinning on Elastohydrodynamic Lubrication Films

作　　者：栗心明[1] 郭峰[1] 耿美香[1] 

机构地区：[1]青岛理工大学机械工程学院,青岛266033

出　　处：《机械工程学报》2008年第11期112-115,共4页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50475165);山东省自然科学基金(Y2004F19)资助项目。

摘　　要：利用自制的旋滑式光干涉弹流薄膜测量系统,对带有自旋的钢球一玻璃盘接触副形成的弹流油膜形状和厚度进行试验研究。采用新的方法来获得自旋,即通过调节接触副与玻璃盘旋转中心的距离改变自旋分量的大小。试验结果表明,自旋导致油膜厚度降低,油膜形状也失去了经典的马蹄形相对卷吸中心线的对称性。当卷吸速度增加时,油膜厚度增加,油膜形状的非对称性增强:载荷增加,油膜厚度减小,油膜形状的非对称性增强;偏心距增加,油膜整体厚度增加,两侧油膜厚度差别减小,油膜开关的对称程度增加。Using a custom-made optical interferometry system for measuring thin lubricating films, the elastohydrodynamic lubrication film thickness and shapes generated by a steel ball-on-glass disc contact under spinning/sliding conditions are studied. Different spinning levels are obtained by adopting a new technique, i.e., adjusting the distance between the contact center and the disc rotation axis. Experimental results show that spinning can induce lower film thickness and the symmetry of the classical horse-shoe film shape gets lost about the entrainment center line. When the entrainment speed increases, the film thickness increases, and the symmetry of the film shapes is enhanced. With increased loads, the film thickness decreases, and the asymmetry of film shape is enhanced. With increased eccentricity, the whole film thickness increases, the difference of film thicknesses on the two sides decreases, and the symmetry of film shape is enhanced.

关 键 词：弹性流体动力润滑 自旋 光干涉测量 

分 类 号：TH117[机械工程—机械设计及理论]