Abstract
The dissipation behavior of granular balls in a quasi-two-dimensional closed container subjected to horizontal vibration is investigated by discrete element method (DEM) in this study. The phase diagrams and damping contours of vibrated granular balls within the interested range of excitation parameters are obtained, which indicates two high damping granular phases (HDGPs), i.e., sloshing state and bidirectional Leidenfrost effect. Moreover, the high damping effect of the two HDGPs is further verified by changing the aspect ratio of granular container, the diameter of granular balls and the filling ratio of granular system. Finally, the universal dynamical behavior of dense granular clusters in the HDGPs is revealed by comparing the motion state of vibrated granular balls in one cycle, which clarifies the optimal damping mechanism of granular balls in the horizontally vibrated closed container.
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