Abstract
Multiobjective approach for optimization of the discharge flow parameters of viscoelastic frictional granular material in a wedge-shaped hopper with fixed outlet orifice is considered. The discharge time and the discharge flow rate are taken as optimality criteria, while the discharge mass of material and the shape of the hopper are considered as design variables. The discrete concept and numerical discrete element method (DEM) are applied to the analysis of granular flow. The filling problem considered as numerical generation of the initial conditions for discharge flow was initially solved. The presented DEM model was validated by examining the wall pressures and comparing them with the results of classical macroscopic pressure prediction. Variation of optimality criteria and Pareto set is demonstrated by the numerical results. Sensitivity of optimality criteria to interparticle friction is also investigated.
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Balevičius, R., Kačianauskas, R., Mroz, Z. et al. Discrete element method applied to multiobjective optimization of discharge flow parameters in hoppers. Struct Multidisc Optim 31, 163–175 (2006). https://doi.org/10.1007/s00158-005-0596-z
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DOI: https://doi.org/10.1007/s00158-005-0596-z