Abstract
The sources of vibrations in machines, and the influence of external vibrations upon friction processes are analysed. Investigations carried out over the range of vibration parameters (frequency 20–120 c/sec, amplitude 5–40 μm) are discussed. The effect of vibrations on technically dry static and kinetic friction at sliding speeds of 0–1.5 m/sec has been examined using steel and cast iron specimens with an antisample of cast iron. A distinct effect of induced vibrations on the values of the force of friction for low sliding speeds has been observed which results in a decrease in the friction force values of up to 15 % of the original value. Considerable changes in the form of frictional vibrations have been proved to exist. Induced vibrations can damp the phenomenon of stick-slip.
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