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The step size determines the accuracy of a discrete element simulation. The position and velocity updating calculation uses a pre-calculated table and hence the control of step size can not use the integration formulas for step size control. A step size control scheme for use with the table driven velocity and position calculation uses the difference between the calculation result from one big step...
The contact force calculation using in discrete element simulation is typically calculated by single spring and damping models. It is found that the commonly used linear model gives unrealistic behaviour. A non-linear model of Tsuji combined with the correct separating time gives more realistic results.Single spring and damping does not allow particles with different surface properties. A double...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.