Abstract：Micro scale contact and friction behavior are widely present in various important industrial devices and systems. With the development of high integration and miniaturization of various electromechanical systems, the impact of friction on devices cannot be ignored. At the microscale, friction behavior exhibits a strong dependence on interface adhesion and size. Understanding the transition from static to dynamic friction at the microscale is of great significance for controlling friction and reducing energy consumption. This study conducted a series of studies on the friction transition process of microscale friction behavior using molecular dynamics methods. By developing a series of modifiable potential functions to quantitatively regulate the friction interface properties, the influence of interface adhesion and contact stiffness on the static friction coefficient was elucidated, and the competition mechanism between them was revealed. In addition, this study also investigated the influence of model size on the static friction coefficient, observed the saturation phenomenon of the peak value of static friction force, and explained it through the contact layer cloud maps.
2024, Vol. 45 
