不锈钢滚动摩擦/载流行为的耦合关系及机制研究

  • 【中文摘要】滚动载流摩擦广泛存在于轨道交通回流系统、高压机电等工程领域,已经成为影响设备安全运行的关键因素。与滑动载流摩擦不同,滚动摩擦副接触区材料快速的接触和分离导致其承载和受流始终处于动态变化,但相关研究相对滞后。由于摩擦因素与载流因素之间的耦合作用,现有纯机械滚动与滑动载流研究的简单延伸或叠加并不适用于滚动载流摩擦。为此,本项目拟以不锈钢自配副为例,系统开展滚动摩擦/载流行为的变化规律、耦合关系及机制研究。在阐明不同载流摩擦条件下材料滚动摩擦学性能、载流性能变化规律和耦合关系的基础上,结合结构分析和成分分析等手段,揭示摩擦过程中材料机械损伤和载流损伤的微观机理及耦合关系,进而建立滚动摩擦/载流耦合机制并探讨滚动载流摩擦的行为特性。该研究不仅有助于丰富载流摩擦学理论,而且有望为交通、能源等领域的滚动载流摩擦学问题提供有益借鉴。【英文摘要】Rolling tribology with current was a fundamental issue in the traction power return system, high-voltage motor, etc, which was a key safety factor in such engineerings. Unlike the close sliding contact, the rapid touching and separating of materials in contact area resulted in the variational statuses of loading and current-carrying on the surfaces during rolling. However, the related researches have not been carried out up to now. Due to the coupling effects of tribology and current, the present issue was not a simple extension or superimposition of pure mechanical rolling and electric sliding. The proposed project is hereby focused on investigating the triboelectric coupling behaviors and the related mechanism of steel self-matched rolling pairs. Firstly, the effects of various experimental conditions on the triboelectric properties and their coupling relationships will be investigated. Based on the analysis of the microstructures and components on the worn surfaces and wear debris, the micro mechanisms of mechanical and electrical damages can be revealed and their correlation will be clarified. Finally, the coupling framework of tribology/current during the rolling contact will be set up, and the specials of rolling triboelectric behaviors will also be discussed. The proposed project research is expected to enrich the art of the current state of triboelectric theory, and also to supply constructive suggestions for the design and safe operation of the engineerings in traffic, energy, etc.

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