Friction-induced vibrations of reciprocating contacts

摘要

The tangential and normal oscillations for three reciprocating and sliding pairs of different materials are experimentally obtained at different normal loads and reciprocating frequencies. The magnitude and phase shift of the transfer function have been measured to correlate the normal and tangential induced oscillations. The results show a remarkable effect of the properties of sliding pairs on both the normal and tangential vibration amplitude during the prescribed motion. The maximum normal amplitude of oscillation is found to vary linearly with the maximum contact pressure regardless of the material type of the sliding surfaces. It is also found that at high normal loads, the tangential amplitude is proportional to the sonic speed in the sliding pair material. Analytical justification has been introduced throughout the work to substantiate and explain the experimental findings.