The goal of this study is to clarify the damping performance of the shot impact damper when it is applied to a self-induced vibration with friction. The periodic motions of the self-induced vibration accompanied with the impact of the damper mass are determined by theoretical analysis as well as numerical simulation. The damping performances are obtained in terms of damper parameters, i.e. mass ratio and clearance. The results show that a large damper mass ratio provides a large damping effect to the fully build-up vibrations, and even lighter masses are effective at the onset of the self-induced vibration. Finally, the optimum clearance and mass ratios of the shot impact damper for the suppression of the self-induced vibrations are obtained.
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