滑动条件下弹流润滑启动过程的实验观察  

Experimental Investigation on the EHL Film Start-up under Pure Sliding Conditions

作　　者：耿美香[1] 郭峰[1] 

机构地区：[1]青岛理工大学机械工程学院,山东青岛266033

出　　处：《润滑与密封》2007年第8期85-87,117,共4页Lubrication Engineering

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

摘　　要：使用光干涉动态油膜厚度测量系统对不同启动条件下聚丁烯润滑油弹流油膜的形成过程进行了实验观测。结果表明,在纯滑动条件下,由于界面滑移弹流油膜存在反常的入口凹陷;卷吸速度相等时,较大的启动加速度产生较大的界面滑移,诱发较大的入口凹陷;不同的启动加速度,入口区的油膜形状和最小油膜厚度的变化也不相同。An experimental investigation on the elastohydrodynamic lubrication film start-up with a polybutene oil was carried out in an optical EHL test rig. The results show that under pure disc sliding conditions, an abnormal dimple occurs due to the slippage at the oil/disc interface. At the same oil entrainment, a higher acceleration can generate more slippage and then more distinct inlet dimples. The start-up acceleration has significant influences on the film gaps at the inlet and the variations of the minimum film thickness.

关 键 词：弹性流体动力润滑 启动 入口凹陷 界面滑移 

分 类 号：TH117.2[机械工程—机械设计及理论]