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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引用次数: 0

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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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.