In order to determine the critical speed of the actual model, a simulation model, including a single particle and a double spiral vertical screw conveyor was presented, whose screw diameter was 400 mm and pitch was 330 mm. The simulation model was established by EDEM, Recur Dyn and ADAMS.2.First, the range of critical speed was obtained through simulation.Then, using the bisection method, the range was narrowed gradually. Finally, the simulation was terminated until the critical speed was obtained. The simu...
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