The activated carbon fine particles, as damping agents, are filled into the impact damper. With experimental method, the performance of the fine particles impact damper to the main system is compared with the multi-unit impact damper. The results indicate that the damping effect of the impact damper with activated carbon fine particles is not better than that of the multi-unit impact damper, but it has a much better effect to restrain the strong nonlinear of response than the multi-unit impact damper. In a certain resonance region, there is an optimum particle filled rate to the fine impact damper.
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