Development and performance research of a new-type air foil bearing with combined bump foils

IF 1.6 3区工程技术 Q3 ENGINEERING, MECHANICAL

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2024-01-30 DOI:10.1177/13506501241227487

Congpeng Shao, Haojie Xu, ShuangMin Li, Xu Wang, Qi An

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Abstract

In this paper, a new-type air foil bearing with combined bump foils is proposed. The bump foils are arranged and combined in the axial direction. The local and global stiffness of the bearing can be adjusted by the combination of the bump foils. Mechanical analysis of the bearing is carried out, and the mechanical model of the elastic deformation of the flat foil and the bump foils is constructed. Combined with non-isothermal Reynolds equation and energy equation, a fluid–solid coupling numerical calculation model is constructed. Through the actual bearing test research, the reliability of the established theoretical model is verified. On this basis, combined with the specific example, the influences of the structural parameters of the new-type foil bearing on its mechanical properties and lubrication performance are studied, and the specific influence curves are obtained. It is also found that the new-type bearing proposed in this paper has good adaptability to the shaft deflection. When the shaft is deflected, the bump foil at the axial end increases the minimum film height by generating large elastic deformation, which can help to avoid wear caused by direct contact between the shaft and the foil.

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新型组合式凸缘气浮轴承的开发与性能研究

本文提出了一种带有组合式凸块的新型气浮轴承。凸点箔在轴向排列组合。轴承的局部刚度和整体刚度可通过凸缘的组合进行调节。对轴承进行了力学分析，并构建了平箔和凸点箔弹性变形的力学模型。结合非等温雷诺方程和能量方程，构建了流固耦合数值计算模型。通过实际轴承试验研究，验证了所建立理论模型的可靠性。在此基础上，结合具体实例，研究了新型箔式轴承结构参数对其力学性能和润滑性能的影响，并得到了具体的影响曲线。研究还发现，本文提出的新型轴承对轴挠度具有良好的适应性。当轴发生挠曲时，轴端凸起的箔片会产生较大的弹性变形，从而增加最小膜高，这有助于避免轴与箔片直接接触造成的磨损。

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

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 工程技术-工程：机械

CiteScore

4.20

自引率

5.00%

发文量

110

审稿时长

6.1 months

期刊介绍： The Journal of Engineering Tribology publishes high-quality, peer-reviewed papers from academia and industry worldwide on the engineering science associated with tribology and its applications. "I am proud to say that I have been part of the tribology research community for almost 20 years. That community has always seemed to me to be highly active, progressive, and closely knit. The conferences are well attended and are characterised by a warmth and friendliness that transcends national boundaries. I see Part J as being an important part of that community, giving us an outlet to publish and promote our scholarly activities. I very much look forward to my term of office as editor of your Journal. I hope you will continue to submit papers, help out with reviewing, and most importantly to read and talk about the work you will find there." Professor Rob Dwyer-Joyce, Sheffield University, UK This journal is a member of the Committee on Publication Ethics (COPE).