A new type of tuned mass damper can be generated by taking a box filled with particles instead of the mass. The vibration reduction effects with or without this new damper under free vibration, white noise, and onsite earthquake excitations, were investigated by a series of shaking table tests. The main structure was a bent frame with a single degree of freedom. It was shown that the filling ratio of the particles had a significant influence on the vibration control, revealing the characteristics of a bimodal curve; lightweight materials could be applied in practice owing to the slight effect of the particle mass on vibration reduction; a parabolic curve revealed the relationship between the input energy of seismic waves and the vibration damping. Also, the tests verified the effective performance on vibration control of the new tuned mass damper in respect of vibration mode.
Key words
a new type of tuned mass damper /
shaking table tests /
structure vibration control /
influence factor
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References
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