A DETAILED STUDY OF THE LOW-FREQUENCY PERIODIC BEHAVIOR OF A DRY FRICTION OSCILLATOR

This work examines the periodic stopping motion present in the low-fre quency response of a dry friction oscillator; excited harmonically thr ough a base spring. Piecewise linear solution methods are used to comp are two simple friction models, to consider the effects of viscous dam ping, and to illustrate stability considerations. Scaling phenomena, p articularly at degenerate frequency ratios, are noted. Finally, experi mental results provide a means to assess the effectiveness of the simp le friction models in predicting observed motion.