Almost periodic vibration excited by dry friction

This paper attends to the problem of a self-excited system with dry friction. The system is composed of mass that interact viscoelasticly with the drive, and by means of dry friction with a foundation The objective of the experimental research on the system was to formulate a dry friction model that would describe the case of stick-slip vibration as well as almost-periodic vibration of steel-polyester pair The model allows for the impact of the following parameters: velocity of motion, acceleration sign, time of adhesion and force rate. The paper includes computer simulation of the vibration of the considered system and comparison between the results of experimental and theoretical analysis.