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Analysis and experimental verification of the energy transfer mechanism in particle dampers for vibration reduction
Wangqiang Xiao1, Yuanyi Luo2,3, Xiaoxuan Xie3
1School of Aerospace Engineering, Xiamen University, Xiamen, 361005, China. wqxiao@xmu.edu.cn.
Abstract:
To elucidate the energy dissipation mechanisms of particle dampers, three configurations are investigated: USPD, ODMPD, and TDMPD. Energy conversion occurs through three pathways: kinetic energy dissipation, internal energy accumulation, and collision-induced acoustic radiation. Experiments on a single-degree-of-freedom platform evaluate energy transfer under varying excitation frequencies, clearances, and amplitudes. At low frequency, only a small fraction of input energy converts to acoustic energy. At high frequency, acoustic radiation efficiency drops significantly. USPD dissipates energy through directional collisions and is kinetic-energy-dominated, while ODMPD and TDMPD rely on inter-particle friction and compression, being internal-energy-dominated. USPD performs better at high frequency due to rapid response. TDMPD achieves optimal damping at low frequency due to strong nonlinearity. ODMPD shows modest performance due to limited particle motion.
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