The effect of friction block hole configurations on the brake tribological performance of high-speed trains

IF 6.3 1区 工程技术 Q1 ENGINEERING, MECHANICAL Friction Pub Date : 2024-06-28 DOI:10.1007/s40544-023-0855-2
Yuanke Wu, Wei Chen, Youguang Zhu, Zaiyu Xiang, Honghua Qian, Jiliang Mo, Zhongrong Zhou
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Abstract

Three triangular friction block configurations are commonly employed in high-speed train brake systems, namely, unperforated, perforated configuration with one circular hole, and perforated with three circular holes. In this study, we adopted these friction block types to investigate the effect of perforated friction block configurations on the brake performance of high-speed trains based on a self-developed brake test rig. The results indicate the significant impact of the number of the holes on the wear behavior, temperature distribution, and vibration characteristics of the brake interface. The friction surface of the unperforated block is covered by wear debris, while the perforated blocks produce less wear debris. Furthermore, the one-hole block exhibits a more uniform temperature distribution and better vibration behavior than that with three holes. The friction brake is a dynamic process, during which separation and attachment between the pad and disc alternatively occur, and the perforated structure on the friction block can both trap and expel the wear debris.

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摩擦片孔结构对高速列车制动器摩擦学性能的影响
高速列车制动系统通常采用三种三角形摩擦片结构,即无穿孔、带一个圆孔的穿孔结构和带三个圆孔的穿孔结构。在本研究中,我们采用这些摩擦片类型,基于自主开发的制动试验台,研究了穿孔摩擦片配置对高速列车制动性能的影响。结果表明,孔的数量对制动界面的磨损行为、温度分布和振动特性有显著影响。无孔制动块的摩擦表面被磨损碎屑覆盖,而有孔制动块产生的磨损碎屑较少。此外,与三孔摩擦块相比,单孔摩擦块的温度分布更均匀,振动特性更好。摩擦制动是一个动态过程,在这一过程中,摩擦片和制动盘之间会交替发生分离和附着,而摩擦块上的穿孔结构既能截留又能排出磨损碎屑。
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来源期刊
Friction
Friction Engineering-Mechanical Engineering
CiteScore
12.90
自引率
13.20%
发文量
324
审稿时长
13 weeks
期刊介绍: Friction is a peer-reviewed international journal for the publication of theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as: Friction: Origin of friction, Friction theories, New phenomena of friction, Nano-friction, Ultra-low friction, Molecular friction, Ultra-high friction, Friction at high speed, Friction at high temperature or low temperature, Friction at solid/liquid interfaces, Bio-friction, Adhesion, etc. Lubrication: Superlubricity, Green lubricants, Nano-lubrication, Boundary lubrication, Thin film lubrication, Elastohydrodynamic lubrication, Mixed lubrication, New lubricants, New additives, Gas lubrication, Solid lubrication, etc. Wear: Wear materials, Wear mechanism, Wear models, Wear in severe conditions, Wear measurement, Wear monitoring, etc. Surface Engineering: Surface texturing, Molecular films, Surface coatings, Surface modification, Bionic surfaces, etc. Basic Sciences: Tribology system, Principles of tribology, Thermodynamics of tribo-systems, Micro-fluidics, Thermal stability of tribo-systems, etc. Friction is an open access journal. It is published quarterly by Tsinghua University Press and Springer, and sponsored by the State Key Laboratory of Tribology (TsinghuaUniversity) and the Tribology Institute of Chinese Mechanical Engineering Society.
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