3. Dry friction contacts

As in the case of lubricated contacts, a dry friction contact is made up of two solid bodies which must transmit forces and ensure the kinematics and dynamics of the mechanism. These two bodies are usually separated by a third body, which may be a coating, a solid lubricant, a surface treatment, or even wear debris. The concept of the third body was introduced by Maurice Godet and was first presented on September 23, 1971 during the "journées d'études sur les traitements de surface contre l'usure" in Saint Étienne [27]. Subsequently, Yves Berthier developed the rheological behavior of the third body [28]. In addition, various dry contact topics were addressed, such as the tribology of fine industrial coatings [29], high-temperature tribology [30][31], machining tribology, rolling or stamping tribology [32], braking tribology, scratching tribology [33][34][35][36], textile touch and feel...