Abstract

Tuned cradle mass dampers (TCMDs) use the motion of a swing mass on a curved surface to dissipate structural vibration energy. In this study, we developed a TCMD that had a constant swing speed. We verify its performance by performing experiments and numerical analysis for a structure undergoing free vibrations. To obtain a device with a constant speed, variable radii of the curved surfaces were calculated using simple pendulum dynamics. In this study, the damper was installed in a simple one-story rigid-frame model with a frequency of approximately 1 Hz and free vibrations was excited. The numerical analysis results agreed well with the experimental results.

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