On the problem of the excitation of self-oscillations in relaxation friction

Resumo

With regard to the problem of decreasing the vibration activity of devices that perform the translational motion of the working body along the pathway, new results have been obtained that determine the threshold speed value; the friction self-oscillations occur lower than this value. It has been established that this value increases upon a decrease in the dissipative characteristics of a drive. The dual character of the influence of the high-frequency disturbance, which leads to the positive effect due to the vibration linearization of the dry friction forces, but simultaneously decreases the realized dissipation level of a drive, has been studied. The optimization of the high-frequency excitation parameters has been performed based on an analysis of the combined influence of these factors. The main conclusions have been proved based on the results of computer modeling.