抄録
The present paper describes damping effect of the impact damper having two vibrators on a floor. Response of the damper is investigated and the optimal natural frequency rates of the vibrators are calculated based on numerical simulations. And the vibrator of the damper and the floor due to floor impact is observed by a high speed camera. Some important results of the study are as follows: 1) Optimum value of natural frequency rates is combination that vibrators collide head-on and collide many times. 2) Effect of the damper for impulse force is clearly observed. And damping effect is in proportion to impact force. 3) Effect of the damper for step force is limited by an additional mass corresponding to the step force on the floor. The natural frequency rates do not become optimal and the number of collisions between two vibrator decreases when the added mass is heavy.
