Abstract
The present paper proposes a novel simulation method combining the finite-difference time-domain (FDTD) method and the discrete-element method (DEM) in order to investigate the damping effect of bending vibration of a plate caused by granular materials. The DEM is used to obtain the motion of the granular material, whereas the FDTD is used for vibration analysis of the plate-like structure. Firstly, the numerical scheme of each method and the coupling scheme of these methods are described in detail. Then, the validity of the proposed method was confirmed by comparing the calculation and measurement results. Finally, based on the numerical and measurement results, we confirmed that the damping of the plate caused by additionally arranged granular materials varies greatly depending on the excitation force acting on the plate.
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