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A simplified analytical method for the pressure of tilt hydrostatic journal bearing

Yikang Du (School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China)
Kuanmin Mao (School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China)
Hongqi Liu (State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China)
Xiaobo Mao (School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China)
Zhihang Li (School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 9 July 2018

Issue publication date: 17 August 2018

150

Abstract

Purpose

This paper aims to present a simplified method to predict the pressure of the recess, no matter whether the tilt center coincides with the geometric center of the hydrostatic journal bearings.

Design/methodology/approach

To validate the effectiveness of the presented model, computational fluid dynamics (CFD) method and experimental method are performed in this study.

Findings

By comparing the CFD results and the experimental results, the pressure of the recess is related to the tilt direction, the tilt center, the width of the land and the circumferential angle of the land.

Originality/value

The mathematic model requires equivalent resistance of land edge – tilt position, tilt direction, tilt angle and the thickness of oil film instead of any digital iteration. Furthermore, a novel experimental apparatus including a circular hydrostatic bearing called ball bearing is designed to study the tilt effect produced by manufacturing error and offset load force on the pressure of the recess.

Keywords

Acknowledgements

This research is supported by grants from the National High Technology Research and Development Program of China (grant number 2015AA043302), High-End CNC Machine Tools and Basic Manufacturing Equipment Technology Major Projects (grant number 2013ZX04005-011) and the National High Technology Research and Development Program of China (grant number 2012AA040703).

Citation

Du, Y., Mao, K., Liu, H., Mao, X. and Li, Z. (2018), "A simplified analytical method for the pressure of tilt hydrostatic journal bearing", Industrial Lubrication and Tribology, Vol. 70 No. 6, pp. 993-1001. https://doi.org/10.1108/ILT-03-2017-0077

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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