Numerical calculation and experimental verification of static and dynamic characteristics of aerostatic thrust bearings with small feedholes

被引：116

作者：

Nishio, Uichiro ^{[2
]}

Somaya, Kei ^{[1
]}

Yoshimoto, Shigeka ^{[1
]}

机构：

[1] Tokyo Univ Sci, Dept Mech Engn, Chiyoda Ku, Tokyo 1020073, Japan

[2] Keio Univ, Sch Integrated Design Engn, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

来源：

TRIBOLOGY INTERNATIONAL | 2011年 / 44卷 / 12期

关键词：

Aerostatic thrust bearing; Small feedholes; Static and dynamic characteristics; Surface roughness; ORIFICE-TYPE RESTRICTOR; GAS;

D O I：

10.1016/j.triboint.2011.07.004

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this work, aerostatic annular thrust bearings with feedholes of less than 0.05 mm in diameter are considered, and the static and dynamic characteristics of these bearings are investigated experimentally and numerically. In numerical calculations using the finite difference method (FDM), the discharge coefficients of a small feedhole were determined based on computational fluid dynamics (CFD) software and verified experimentally. In addition, the effect of the bearing surface roughness on the bearing characteristics was analyzed experimentally and numerically. It was confirmed that aerostatic thrust bearings with small feedholes could have larger stiffness and damping coefficient than bearings with compound restrictors. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1790 / 1795

页数：6

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