Abstract
This work studied the dynamic motions of disc samples with three contact surfaces on an oiled flat glass plate. A driving force was applied to the sample using elastic cords at the initial stage of motion. The sliding and rotation behaviors of the samples were determined to elucidate the effect of friction on the dynamic motions. Analytical models were also proposed for the sliding and rotation of samples based on equations of motion with damping factors. The models revealed all of the dominant features of experimental sliding and rotation, and indicated that the damping factor plays a significant role in the analysis the dynamic motions of samples under lubricated smooth surface conditions.
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