TY - JOUR
T1 - An effective sphere-based model for breakage simulation in DEM
AU - Tavares, Luís Marcelo
AU - Rodriguez, Victor A.
AU - Sousani, Marina
AU - Padros, Carles Bosch
AU - Ooi, Jin Y.
N1 - Funding Information:
The authors from UFRJ would like to thank the partial financial support to this investigation from the Brazilian research agencies CNPq (grant number 310293/2017-0 ) and FAPERJ (grant number E-26/202.574/2019 ). The valuable discussions with Dr. David Curry of Altair EDEM were deeply appreciated, while the assistance of Dr. Gabriel Barrios in preparing a couple of the figures was appreciated. The technical support from Altair EDEM team is also gratefully acknowledged.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/11
Y1 - 2021/11
N2 - Breakage occurs in several particulate systems that are simulated using the discrete element method (DEM), namely crushing and grinding as well as inadvertently in several others that include transportation, handling, mixing, separation and geotechnical applications.Different approaches may be used to describe particle breakage using DEM, but in cases in which particle breakage influences significantly the flow behaviour of the material, imbedding the breakage description in DEM provides the only valid alternative. This study describes the implementation of a detailed breakage model based on particle replacement with spheres in the commercial software EDEM. It accounts for variability and size-dependency in particle fracture energies,weakening of particles by unsuccessful stressing events, aswell as addressing several reported shortcomings in sphere replacement schemes. The model is verified in great detail on the basis of single-particle breakage information and validated using measurements in unconfined particle beds of mineral ores.
AB - Breakage occurs in several particulate systems that are simulated using the discrete element method (DEM), namely crushing and grinding as well as inadvertently in several others that include transportation, handling, mixing, separation and geotechnical applications.Different approaches may be used to describe particle breakage using DEM, but in cases in which particle breakage influences significantly the flow behaviour of the material, imbedding the breakage description in DEM provides the only valid alternative. This study describes the implementation of a detailed breakage model based on particle replacement with spheres in the commercial software EDEM. It accounts for variability and size-dependency in particle fracture energies,weakening of particles by unsuccessful stressing events, aswell as addressing several reported shortcomings in sphere replacement schemes. The model is verified in great detail on the basis of single-particle breakage information and validated using measurements in unconfined particle beds of mineral ores.
KW - Comminution
KW - Degradation
KW - Discrete element method
KW - Monte Carlo
KW - Particle breakage
KW - Particle replacement
KW - Particle weakening
KW - Simulation
UR - http://www.scopus.com/inward/record.url?scp=85110760161&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2021.07.031
DO - 10.1016/j.powtec.2021.07.031
M3 - Article
AN - SCOPUS:85110760161
SN - 0032-5910
VL - 392
SP - 473
EP - 488
JO - Powder Technology
JF - Powder Technology
ER -