Design of aerostatic bearing restrictor with multi-loop coupling pocket

Jing Yu; Bo Fang; Tiantai Guo; Dongsheng Li; Wen Zhang

doi:10.1117/12.885461

28 December 2010 Design of aerostatic bearing restrictor with multi-loop coupling pocket

Jing Yu, Bo Fang, Tiantai Guo, Dongsheng Li, Wen Zhang

Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75440Y (2010) https://doi.org/10.1117/12.885461
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

The shape and size of a pocket influences the pressure distribution on the working face of an aerostatic bearing and causes the vibration in normal direction of air gap. In order to analyze the pressure distribution on the working face of an aerostatic bearing caused by the shape of a pocket, an aerostatic bearing restrictor with multi-loop coupling pocket is proposed and double-loop and tricycle forms are taken as examples to illustrate the arrangements of a pocket and analyze the pressure-impedance relationship of a throttle system in different situations. Simulation is done using FLUENT, a computational fluid dynamics (CFD) software, to obtain the pressure distribution on the working face of an aerostatic bearing and the static performance curve with respect to the diameter of an orifice. The comparison between restrictors of aerostatic bearing with or without double-loop coupling pocket shows that the addition of a multi-loop pocket on the working face of an aerostatic bearing contributes to the improvement of surface pressure-averaging effect and static load carrying capability, and the reduction of air film vibration, thereby improving the measurement accuracy. These results are of practical significance for the design of key aerostatic bearing components.

Citation Download Citation

Jing Yu, Bo Fang, Tiantai Guo, Dongsheng Li, and Wen Zhang "Design of aerostatic bearing restrictor with multi-loop coupling pocket", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75440Y (28 December 2010); https://doi.org/10.1117/12.885461

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available