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Analysis of misaligned water-lubricated polymer bearing with axial grooves

Fangrui Lv (Institute of Vibration, Shock and Noise, State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, P.R. China)
Chunxiao Jiao (Institute of Vibration, Shock and Noise, State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, P.R. China)
Donglin Zou (Institute of Vibration, Shock and Noise, State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, P.R. China)
Na Ta (Institute of Vibration, Shock and Noise, State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, P.R. China)
Zhu-shi Rao (Institute of Vibration, Shock and Noise, State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, P.R. China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 26 November 2018

Issue publication date: 3 April 2019

216

Abstract

Purpose

The purpose of this paper is to analyze the lubrication behavior of misaligned water-lubricated polymer bearings with axial grooves.

Design/methodology/approach

A lubrication model considering journal misalignment, bush deformation and grooves is established. In dynamic analyses of shaft systems, bearings are usually simplified as supporting points. Thus, an approach for solving the equivalent supporting point location is presented. The influence of misalignment angle and groove number on film thickness, hydrodynamic pressure distribution, load-carrying capacity and ESP location is investigated.

Findings

As the misalignment angle increases, the location of the maximum pressure and ESP are shifted toward the down-warping end, and the load-carrying capacity of the bearing decreases. In comparison to the nine-groove bearing, the six grooves bearing has a higher load-carrying capacity and the ESP is located closer to the down-warping end for an equivalent misalignment angle.

Practical implications

The results of this study can be applied to marine propeller shaft systems and other systems with misaligned bearings.

Originality/value

A study on the lubrication behavior of misaligned water-lubricated polymer bearings with axial grooves is of significant interest to the research community.

Keywords

Citation

Lv, F., Jiao, C., Zou, D., Ta, N. and Rao, Z.-s. (2019), "Analysis of misaligned water-lubricated polymer bearing with axial grooves", Industrial Lubrication and Tribology, Vol. 71 No. 3, pp. 411-419. https://doi.org/10.1108/ILT-08-2018-0320

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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