Effects of surface morphology on the performance of water-lubricated thrust bearings

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Industrial Lubrication and Tribology Pub Date : 2024-03-01 DOI:10.1108/ilt-08-2023-0247

Jun Cheng, Chunxing Gu

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引用次数: 0

Abstract

Purpose

As the crucial support component of the propeller power system, the reliability of the operation of submersible pumps is influenced by the lubrication performance of water-lubricated thrust bearings. When the water-lubricated thrust bearings are under start-stop or heavy load conditions, the effect of surface morphology is crucial as the mixed lubrication regime is encountered. This paper aims to develop one mixed lubrication model for the water-lubricated thrust bearings to predict the effects of surface skewness, kurtosis and roughness orientation on the loading carrying capacity and tribological behavior.

Design/methodology/approach

This paper developed one improved mixed lubrication model specifically for the water-lubricated thrust bearing system. In this model, the hydrodynamic model was improved by using the height of the rough surface and its probability density function, combined with the average flow model. The asperity contact model was improved by using the equation for the Pearson system of frequency curves to characterize the non-Gaussian aspect of surface roughness distribution.

Findings

According to the results, negative skewness, large kurtosis and lateral surface pattern can improve the tribological performance of water-lubricated thrust bearings. Optimizing the surface morphology is a reasonable design method that can improve the performance of water-lubricated thrust bearings.

Originality/value

In this paper, one mixed lubrication model specifically for the water-lubricated thrust bearing with the effect of surface roughness into consideration was developed. Based on the developed model, the effect of surface morphology on tribological behavior can be evaluated.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2023-0247/

查看原文本刊更多论文

表面形态对水润滑推力轴承性能的影响

目的作为螺旋桨动力系统的关键支撑部件，潜水泵运行的可靠性受到水润滑推力轴承润滑性能的影响。当水润滑推力轴承处于启停或重载条件下时，表面形态的影响至关重要，因为会遇到混合润滑状态。本文旨在为水润滑推力轴承开发一种混合润滑模型，以预测表面偏斜度、峰度和粗糙度取向对承载能力和摩擦学行为的影响。在该模型中，通过使用粗糙表面的高度及其概率密度函数，结合平均流模型，改进了流体动力学模型。研究结果表明，负偏度、大峰度和横向表面形态可以改善水润滑推力轴承的摩擦学性能。本文建立了一个专门针对水润滑推力轴承的混合润滑模型，并考虑了表面粗糙度的影响。基于所建立的模型，可以评估表面形态对摩擦学行为的影响。同行评议本文的同行评议记录可在以下网址查阅：https://publons.com/publon/10.1108/ILT-08-2023-0247/。

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来源期刊

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.