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The effect of the arc on annular-thrust aerostatic porous bearings

Polina V. Khan (Melentiev Energy System Institute, Irkutsk, Russia)
Dawit Zenebe Segu (School of Mechanical Engineering, Yeungnam University, Gyeongsan, Republic of Korea)
Pyung Hwang (School of Mechanical Engineering, Yeungnam University, Gyeongsan, Republic of Korea)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 13 November 2017

113

Abstract

Purpose

Aerostatic porous bearings are important for guide rails and spindles. It is well-known that flow restrictors made of porous materials offer major advantages over conventional restrictors in such bearings, including design and manufacturing, load-carrying capacity, stiffness, damping and dynamic stability. Thus, this work numerically investigates the effect of the arc on a new combined annular-thrust aerostatic porous bearing.

Design/methodology/approach

The static characteristics of an annular-thrust aerostatic porous bearing were studied using a fast finite element scheme. The pressure distribution, radial load and thrust load were analyzed as functions of the arc, permeability and eccentricity.

Findings

The results reveal that the radial load achieves maximal values at an optimal arc value between 200 and 300, and the thrust load increases monotonically with increasing arc.

Originality/value

This work developed a new combined annular-thrust aerostatic porous bearing to investigate the effect of arc on the annular-thrust aerostatic porous bearings to increase the load-carrying capacity.

Keywords

Acknowledgements

The authors thank Yeungnam University (YU) for financial support for the research 2016.

Citation

Khan, P.V., Segu, D.Z. and Hwang, P. (2017), "The effect of the arc on annular-thrust aerostatic porous bearings", Industrial Lubrication and Tribology, Vol. 69 No. 6, pp. 925-929. https://doi.org/10.1108/ILT-12-2016-0310

Publisher

:

Emerald Publishing Limited

Copyright © 2017, Emerald Publishing Limited

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