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Non-obstructive Particle Damping (NOPD) is widely used as an effective passive damping technique. However, the understanding of the energy dissipation mechanism and meso-scale behavior of the granular system in NOPD is not sufficiently in-depth. In this paper, the damping effectiveness of NOPD, as represented by the contour plot of the loss factor, was analyzed in combination with the motion modes...
The screening process of particle flow on an elliptical vibration screen was simulated based on the discrete element method (DEM). The motion characteristics and screening mechanisms of particles on the screen deck were studied. The effects of the vibration parameters, including the vibration amplitude, vibration frequency, vibration direction angles, motion trace, and the throwing index on the screening...
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