Tianyan Gao, Guorui Wang, Tao Wang, Zijian Chen, Houbo Li, Kun Liu, Zhong Zhang
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引用次数: 0
Abstract
Transient high friction force usually appears when a hard sphere slides on a soft substrate during the water evaporation. Such a special wetting condition featuring the friction enhancement, even exceeding the friction of dry conditions, is termed as tacky regime. Herein, the impact of Schallamach waves on the friction enhancement induced by capillary adhesion is investigated by integrating microtribometer measurements, interference microscopy visualization, and finite element analysis. The friction peak decreases or even disappears with decreasing elastic modulus of the soft substrate, which is attributed to the nucleation and propagation of Schallamach waves. The increase in friction during the tacky transition depends on the competition between capillary adhesion and stress relief of Schallamach wave.
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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