一类反常弹流油膜出现的实验研究  

Experimental Study of an Abnormal EHL Film with Inlet-dimples

作　　者：王学锋[1] 郭峰[1] 付忠学[1] 杨沛然[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：《摩擦学学报》2007年第3期269-273,共5页Tribology

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);青岛市科技发展基金联合资助项目(04-2-JZ-112)

摘　　要：采用光干涉法对球-圆盘和椭圆滚子-圆盘形成弹流油膜的凹陷现象进行研究.结果表明:凹陷只存在于一定的速度范围内,并受到载荷、卷吸方向及运动条件的影响;在速度-载荷关系曲线上,凹陷出现区域为一开放的三角形;润滑油的极限剪应力特性及其诱发的界面滑移为凹陷产生的原因.Using optical interferometry, elastohydrodynmic lubrication of films with an inlet-dimple was studied experimentally under ball-on-disc and spherical roller-on-disc contacts. The results show that the dimple only apwithin a limited entrainment speed range, and this speed range was influenced by applied loads, the entrainment direction and the kinematic condition. The occurrence regime of the dimple had a triangular shape in terms of load versus speed. The observed inlet dimple can be tentatively interpreted by limiting shear stress or wall slippage.

关 键 词：弹性流体动力润滑(EHL) 凹陷 极限剪应力 

分 类 号：TH117.2[机械工程—机械设计及理论]