Effects of turbulence and bush wear on the transient tribo-dynamic characteristics of water-lubricated bearings

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-25 DOI:10.1177/13506501241233353

Ziqi Chen, Ji Wang, Rui Li, Yujun Liu, Pengfa Yu

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引用次数: 0

Abstract

This research proposes a transient mixed elastohydrodynamic model considering turbulence and bush wear, as well as the concept of contact work, to study the transient tribo-dynamic characteristics of water-lubricated bearings. The effects of turbulence, wear depth, and wear deviation angle on transient tribo-dynamic characteristics of water-lubricated bearings are investigated. The findings show that turbulence significantly affects the dynamics of stable conditions and enhances the hydrodynamic effect, but little affects the frictional contact behavior. An appropriate wear depth favors improving the tribo-dynamic characteristics of the water-lubricated bearings, but it deteriorates as the wear depth continuously increases. Negative deviation angles are better for minimizing contact work and enhancing rotor stability. The lubrication and dynamic properties of water-lubricated bearings can be enhanced through a rational approach to wear morphology design. This research is important for the optimal design and diagnosis of water-lubricated bearings wear failures.

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湍流和轴瓦磨损对水润滑轴承瞬态三动力特性的影响

本研究提出了一种考虑了湍流和轴瓦磨损以及接触功概念的瞬态混合弹流动力学模型，用于研究水润滑轴承的瞬态摩擦动力学特性。研究了湍流、磨损深度和磨损偏角对水润滑轴承瞬态摩擦动力学特性的影响。研究结果表明，湍流对稳定工况下的动态影响很大，并增强了流体动力学效应，但对摩擦接触行为影响很小。适当的磨损深度有利于改善水润滑轴承的摩擦动力特性，但随着磨损深度的不断增加，摩擦动力特性会恶化。负偏角更有利于减少接触功和提高转子稳定性。通过合理的磨损形态设计可以提高水润滑轴承的润滑和动力特性。这项研究对于水润滑轴承磨损故障的优化设计和诊断非常重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.