环面节流静压气体球轴承的相似准则  

Similitude Criteria of Externally Pressurized Spherical Gas Bearing with Inherent Compensation

作　　者：郭良斌[1] 王祖温[2] 刘暾[3] 

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430070 [2]大连海事大学机电与材料工程学院,辽宁大连116026 [3]哈尔滨工业大学航天学院,黑龙江哈尔滨150001

出　　处：《摩擦学学报》2006年第3期257-263,共7页Tribology

基　　金：国家自然科学基金重点项目资助(50335010)

摘　　要：从静压气体润滑基本控制方程组的无量纲化着手,在详细分析静压气体轴承的耦合边界条件及非定常雷诺气体润滑方程特性的基础上,对Constantinescu给出的动压气体轴承相似准则进行补充,得到环面节流静压气体球轴承定常气体润滑膜及非定常气体润滑膜的相似准则.数值实验的结果表明:数值计算结果与相似理论分析结论完全一致;当其它参数不变时,不同球半径的2个球轴承的气膜流场相似;球半径改变对轴承动静态性能的影响可以利用相似理论进行分析.In view of general equations of externally pressurized gas lubrication in dimensionless form, coupling boundary conditions of externally pressurized spherical gas bearing and characteristics of non-steady Reynolds＇equations were analyzed particularly. Similitude criteria for steady operation and non-steady operation of externally pressurized spherical gas bearing with inherent compensation were deduced, which may be considered a corrected form to the similitude criteria of hydrodynamic gas bearing put forward by V. N. Constantinescu. Computation results was surely in agreement with analyzed conclusion of similitude theory and two spherical gas bearing only with different radius should operate similarly with other parameters retain fixed. Influence to bearing＇s static and dynamic characteristics can be estimated by similitude criteria due to changes of sphere radius.

关 键 词：静压气体球轴承 相似准则 环面节流 

分 类 号：TH133.36[机械工程—机械制造及自动化] TH117.2