#### Machines | Free FullText | Modeling Impulsive Ball Mill Forces ... MDPI

This approach is based on a hybrid numerical model of a 24degreeoffreedom gearbox, simulating one gear train and two drive shafts. The impact forces of the mill drum are modelled by a discrete element method (DEM). The ballfilling rate (Fr), the mill speed (Nr), and the ball size (Db) are considered to study this phenomenon.