Preliminary Investigation on the Critical Point for Wheel–Rail Adhesion Recovery Phenomenon Under Water-Based Conditions

IF 2.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Tribology Letters Pub Date : 2025-03-28 DOI:10.1007/s11249-025-01989-y

Zhou Jiajun, Zhai Gengwei, Liu Yinhu, Xue Mingchen, Zhou Gaowei, Tian Chun, Wu Mengling

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Abstract

Under lubrication conditions such as water and anti-wear fluids, the wheel–rail interface typically demonstrates a low-adhesion state. More and more evidence suggests that the adhesion coefficient is not static but dynamically coupled with the rolling and sliding behaviors of the wheels. When the slip ratio between the wheel and rail is high, strong friction can greatly improve the rail surface condition, resulting in adhesion recovery. Nevertheless, experimental research on wheel–rail adhesion under high-speed and high slip ratios is lacking, and especially the critical point of adhesion recovery has not been clarified. This study investigates the adhesion characteristics at a speed of 400 km/h and analyzes the relationship between changes in adhesion and wheel surface temperature under high slip ratio conditions. The results suggest that there is a strong correlation between the wheel surface temperature and the critical point for adhesion recovery. Lubricants such as water and anti-wear fluids have a critical lubrication failure temperature, and once this temperature is exceeded, the lubrication state will be damaged, leading to an adhesion recovery phenomenon.

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水基条件下轮轨附着恢复现象临界点的初步研究

在水和抗磨流体等润滑条件下，轮轨界面通常呈现低附着状态。越来越多的证据表明，附着系数不是静态的，而是与车轮的滚动和滑动行为动态耦合的。当轮轨之间的滑移比较高时，强烈的摩擦可以大大改善轨道表面状况，从而导致附着力恢复。然而，高速、高滑移比条件下轮轨黏附性能的实验研究还很缺乏，特别是黏附恢复的临界点还没有明确。研究了高速行驶400 km/h时的附着力特性，分析了高滑移率条件下附着力变化与车轮表面温度的关系。结果表明，车轮表面温度与附着恢复临界点之间存在很强的相关性。水、抗磨液等润滑剂有一个临界润滑失效温度，一旦超过这个温度，润滑状态就会被破坏，导致附着恢复现象。

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

Tribology Letters 工程技术-工程：化工

CiteScore

5.30

自引率

9.40%

发文量

116

审稿时长

2.5 months

期刊介绍： Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.