无氧环境下气体动力轴承承载性能及弹性支承结构摩擦磨损特性

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-02-07 DOI:10.1016/j.wear.2025.205902

Chuanbing Zhang , Bo Li , Yongjun Cheng , Bi Wang , Yuming Wang , Decai Li , Zixi Wang

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引用次数: 0

摘要

气体动轴承在微高速旋转机械中得到了广泛的应用。然而，现有的大多数研究都局限于传统的空气环境。本研究旨在通过进行全面的调查来解决这一差距。首先，我们对凹凸箔条与顶部箔条的摩擦磨损特性进行了比较和监测。其次，探讨了GDB弹性支撑结构的刚度特性。此外，我们研究了GDB在无氧和常规空气环境下的静态和动态承载性能。结果表明：在无氧气氛下，凹凸箔条与顶部箔条之间的摩擦系数、弹性支撑结构的刚度、承载能力和GDB的动承载刚度均显著高于常规空气环境。

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Bearing performances of gas dynamic bearing and friction/wear characteristics of elastic support structure in an oxygen-free atmosphere

Gas dynamic bearing (GDB) has been extensively utilized in micro high-speed rotating machinery. However, the majority of existing research has been confined to conventional air environments. This study aims to address this gap by conducting a comprehensive investigation. Firstly, we compare and monitor the friction/wear characteristics between the bump foil strip and the top foil strip. Secondly, we explore the stiffness characteristics of the elastic support structure in GDB. Additionally, we examine the static and dynamic bearing performance of GDB in both oxygen-free and conventional air environments. Results reveal that in an oxygen-free atmosphere, the friction coefficient between the bump foil strip and the top foil strip, the stiffness of the elastic support structure, the load-carrying capacity, and the dynamic bearing stiffness of GDB are significantly higher than those observed in conventional air environment.

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.