A mechanical model and parameter analysis of a pounding tuned rotary mass damper

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (8) : 179-186.

HUANG Xuhong，YAN Weiming，XU Weibing，WANG Baoshun

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Abstract

A pounding tuned rotary mass damper (PTRMD) was developed on the basis of the study of a tuned mass damper and a particle damper. The influence of various parameters on the vibration damping performance and mechanism is not clear. A PTRMD mechanical model was established by considering the collision and friction. The vibration process was divided into non-collision processes, collision processes, and viscous vibration process, and the corresponding motion equations were established separately. Finally, based on the numerical simulation, the parameter analysis was performed on the collision gap ratio, particle motion, frequency ratio, rolling friction coefficient, collision recovery coefficient, particle mass, the harmonic excitation intensity and frequency. The results show that when the particle motion frequency is small, the PTRMD damping effect increases linearly with the collision gap ratio, and the influence of the excitation amplitude is small. When the particle motion frequency is relatively large, the damping effect increases first and then decreases with the collision spacing ratio, and is greatly affected by the excitation amplitude.

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pounding tuned rotary mass damper(PTRMD) / vibration control / vibration damping mechanism / parameter analysis / collision

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HUANG Xuhong，YAN Weiming，XU Weibing，WANG Baoshun. A mechanical model and parameter analysis of a pounding tuned rotary mass damper[J]. Journal of Vibration and Shock, 2021, 40(8): 179-186

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