基于周期性挤压条件下弹流油膜的研究  

Study of EHL Film under Cyclical Squeezing

作　　者：李海英[1] 郭峰[2] 

机构地区：[1]青岛职业技术学院,山东青岛266555 [2]青岛理工大学机械工程学院,山东青岛266033

出　　处：《装备制造技术》2010年第5期1-3,9,共4页Equipment Manufacturing Technology

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资助项目(05-2-JZ-112)

摘　　要：球体周期性冲击弹流问题已得到解决,以前的实验研究也已被数学模拟论证。在载荷持续期间,中心油膜厚度和频率在对数坐标下呈线性关系,数值模拟结果表明,中心油膜厚度随时间逐渐减小和试验结果相似,数值模拟结果是一个涡状油膜形状,它是由接触区域较高的压力产生,频率和静载对油膜厚度和压力的影响也得到了论证。A time-dependent EHL problem of a ball impacting a plate by a cyclic approach-separation motion has been solved. Previous experimental findings by some of the authors have been numerically confirmed,i.e.,the nearly constant central film thickness during the load-sustaining stage,and the linear relationship between this constant film thickness and the frequency in a log-log scale. The numerical results show a constriction in the trace of central film thickness versus time. Similar to the experiments,numerical results give a dimple film shape,which is caused by the high pressure induced within the contact region. The influences of the frequency,the static contact load on the film thickness and the film pressure have also been investigated.

关 键 词：弹性流体润滑 压力峰 油膜颈缩 中心压力 

分 类 号：TH117[机械工程—机械设计及理论]