Influence of friction characteristics of a bulk material on its outflow from a conical hole

Taking into account the adhesive interaction of the product with the walls of the hopper, a mathematical model of the fine-grained bulk material stress state in a conical hopper hole under vibration is proposed.  A discrete environment model was used for analysis.  This model was based on considering the equilibrium of an elementary volume with an infinitesimal thickness.  An analytical dependency was established, allowing an estimate of the influence of frictional factors on the fine-grained bulk material stress state, thereby enabling its modification by adjusting certain parameters, such as the dosing process and the discharge hopper geometry.

fine-grained bulk material
напружений стан
unloading hole
hopper
vibration parameters
friction characteristics
leakage conditions
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