Determination Method of Core Parameters for the Mechanical Classification Simulation of Thin-Skinned Walnuts

Simulation can be used to visualize the mechanical classification of walnuts. It collect microscopic information about walnuts in roller and guide its optimization design. In this process, simulation parameters are essential factors that ensure effectiveness simulation. study, crucial thin-skinned walnut particles were determined by combining discrete element method (DEM) physical tests. Firstly, moisture content, shear modulus, stacking angle, some contact shell kernel obtained drying test, compression cylinder lifting test parameters, respectively. A model was constructed using reverse modeling technology. Then, ranges rest inversion based on Generic EDEM Material Model database. Second, significantly influencing angle screened via Plackett–Burman as index. The results revealed walnut–walnut static friction coefficient, rolling walnut–steel plate coefficient affect angle. steepest ascent experiment produced optimal value intervals parameters. Besides, a quadratic regression important built Box–Behnken achieve parameter combination. experiments verified morphology mostly similar under calibration without any considerable differences. relative error only 0.068%. Notably, average staying time 0.671%, dimensionless distribution curves stay consistent. This study provides technological support analysis recommends novel methods references determine other materials.