静压气浮导轨承载能力的解析法和有限元法对比分析  

Comparison of the Loading Capacity Analysis of Aerostatic Guide Way Based on Analytic Method and Finite Element Method

作　　者：陈爱民[1] 马平[1] 龚政[1] 

机构地区：[1]广东工业大学机电工程学院,广东广州510006

出　　处：《润滑与密封》2009年第6期43-48,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(50775043)

摘　　要：承载能力是静压气浮导轨的一个重要的静态性能指标。采用解析法和有限元分析法2种方法计算了闭式矩形静压气浮导轨的承载能力。结果表明:闭式矩形静压气浮导轨的承载能力随供气压力的增大而增大;2种方法计算结果具有较好的一致性,其中有限元法实现了对气体流场的三维仿真,不仅考虑了扩散效应的影响,而且把求解域从传统的薄膜区扩展到节流孔上游,可考虑更多因素的影响,结果更符合实际情况。The loading capacity is an important index of the aerostatic guide way. The loading capacity of closetype rectangle aerostatic guide way was calculated and analysed based on analytic method and finite element method. The result shows that the loading capacity of closetype rectangle aerostatic guide way increases with the increase of pneumatic pressure from air source diffusing effect into effect. The calculation values based on two methods is well consistent. The finite element method takes the consideration, realizes the 3D airflow field simulation, and eliminates the error brought by diffusing

关 键 词：静压气浮导轨 承载能力 解析法 有限元法 

分 类 号：TH133.2[机械工程—机械制造及自动化]