Numerical investigation of static and dynamic characteristics of aerostatic thrust bearings with small feed holes

被引:134
作者
Miyatake, Masaaki [1 ]
Yoshimoto, Shigeka [1 ]
机构
[1] Tokyo Univ Sci, Dept Mech Engn, Chiyoda Ku, Tokyo 1020073, Japan
关键词
Aerostatic bearing; Small feed holes; Static and dynamic characteristics; Numerical investigation; ORIFICE-TYPE RESTRICTOR; GAS;
D O I
10.1016/j.triboint.2010.01.002
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Recently, laser beam machining and micro drills have made it easier to manufacture small feed holes of less than 0.1 mm diameter. Accordingly, aerostatic bearings with these small feed holes have become commercially available for improving bearing performance. In this work, an aerostatic annular thrust bearing with small feed holes of less than 0.05 mm diameter was treated and the static and the dynamic characteristics of this type of bearing were investigated numerically. In numerical calculations, computational fluid dynamics (CFD) was used to determine discharge coefficients for a small feed hole and the finite difference method (FDM) was used to obtain the bearing characteristics. In addition, the characteristics of this type of bearing were compared with those of aerostatic thrust bearings with typical compound restrictors to show clearly the features of this type of bearing. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1353 / 1359
页数:7
相关论文
共 9 条