TY - JOUR

T1 - A breakage model for DEM based on a probabilistic particle replacement with Voronoi fragments

AU - Denzel, Michael

AU - Prenner, Michael

AU - Sifferlinger, Nikolaus August

AU - Antretter, Thomas

PY - 2023/8/17

Y1 - 2023/8/17

N2 - Due to mechanical stress, bulk material is crushed and fines are produced. This can either be desired in comminution processes or undesired in conveying and storage processes. In this work a novel breakage model for the Discrete Element Method is presented to allow a prediction of the resulting particle size distribution after damaging events. The breakage model is based on a probabilistic particle replacement strategy. Depending on the load, the initial particle is replaced by a breakage pattern tessellated with the Voronoi algorithm. Replacement probabilities and breakage patterns follow results from breakage tests. In contrast to other replacement models, mass and volume remain constant. Initial particles are polyhedral and can be of any shape. Crushing processes with multiple breakage can be simulated. The computational scheme is described in detail. The model was verified and validated with trials of shatter tests and two conveying processes with blast furnace sinter from two different industrial partners.

AB - Due to mechanical stress, bulk material is crushed and fines are produced. This can either be desired in comminution processes or undesired in conveying and storage processes. In this work a novel breakage model for the Discrete Element Method is presented to allow a prediction of the resulting particle size distribution after damaging events. The breakage model is based on a probabilistic particle replacement strategy. Depending on the load, the initial particle is replaced by a breakage pattern tessellated with the Voronoi algorithm. Replacement probabilities and breakage patterns follow results from breakage tests. In contrast to other replacement models, mass and volume remain constant. Initial particles are polyhedral and can be of any shape. Crushing processes with multiple breakage can be simulated. The computational scheme is described in detail. The model was verified and validated with trials of shatter tests and two conveying processes with blast furnace sinter from two different industrial partners.

KW - Breakage Model

KW - DEM based

KW - Probabilistic Particle Replacement

KW - Voronoi Fragments

KW - Particle Breakage

KW - Comminution

KW - Polyhedral Particles

KW - Discrete Element Method

KW - Progeny Distribution

U2 - 10.1016/j.mineng.2023.108328

DO - 10.1016/j.mineng.2023.108328

M3 - Article

VL - 203.2023

JO - Minerals engineering

JF - Minerals engineering

SN - 0892-6875

IS - November

M1 - 108328

ER -