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Linear-spring dashpot model is one of the major contact models applied to the DEM (discrete element method) simulation of the tumbling ball mills. The model parameters such as stiffness, damping coefficient, coefficient of restitution and coefficient of friction, significantly influence the calculation of contact forces and the selection of the critical time step. However, there is no standard as...
In this paper, we present a simulation process of the melt-texture YBCO high-temperature superconductor (HTS) bulk levitated over the permanent-magnet (PM) guideway, and further experiment also been built to analyze the dynamic behavior of HTS. The relation between suspension force and amplitude of the levitation system under single-degree of freedom vibration environment was investigated, and stiffness...
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