平面弹性机构间隙效应控制研究  

On the Control of Clearance Effects in the Planar Elastic Mechanism

作　　者：靳春梅[1] 邱阳 张陵[1] 

机构地区：[1]西安交通大学建筑工程与力学学院,西安710049

出　　处：《机械科学与技术》2001年第5期710-711,731,共3页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金资助 (5 9875 0 68)

摘　　要：弹性机构铰接副处过大间隙的存在加速了杆件的疲劳与磨损 ,严重地影响了机器的动态特性机构。本文在含间隙弹性平面连杆机构的二阶段动力学模型中 ,引入挤压油膜阻尼器被动控制技术 ,通过算例 ,对比分析了间隙铰及挤压油膜铰机构中弹性杆件变形的稳态响应。结果表明 ,挤压油膜阻尼器可以有效地控制含间隙弹性机构中过大的弹性变形 。The excessive pair clearance can introduce har mful vibration and noise, and seriously hamper the machine dynamic performance. In this paper, the squeeze film passive control technology is incorporated into the Newton two-state model of planar elastic linkage mechanism. Illustrative ex ample is shown to compare elastic deformation steady responses between clearance joint and squeeze film lubricated mechanisms. The analytical results indicate t hat squeeze film damper can effectively control the excessive elastic deformatio n and improve the steady-state performance of elastic linkage mechanism.

关 键 词：平面弹性机构 间隙效应 挤压油膜 控制 

分 类 号：TH112.5[机械工程—机械设计及理论] TH113