The dynamic features of the friction process contacting pairs affect their durability and functional suitability. There-fore, problems dynamics vibrational activity always attract attention researchers in field tribology. It is known that self-organization processes take place during friction, such as formation selective transfer phenom-ena equilibrium roughness. But studies do not into account...

Friction and wear are detrimental to engineered systems. Ultrasonic lubrication is achieved when the interface between two sliding surfaces is vibrated at a frequency above the acoustic range (20 kHz). As a solid-state technology, ultrasonic lubrication can be used where conventional lubricants are unfeasible or undesirable. Further, ultrasonic lubrication allows for electrical modulation of th...

In ultra-precision positioning equipment, the accuracy is affected by friction characteristics, especially pre-slip stage. At present, research on mainly includes contact theory and dynamic process. There no time variable in models, so they only apply to stage of static contact, while establishment a dynamics model depends parameter identification cannot reflect influence rough morphology load....