Table 1.

DEM properties

General simulation properties
Initial sample size: height × diameter: mm30 × 15
Wall friction coefficient0
Particle friction coefficient0·5
Contact modelHertz–Mindlin
Particle shear modulus: GPa28
Particle Poisson ratio0·25
Particle density: kg/m32650
Initial voids ratio0·75
Weibull modulus3·3
Initial particle size: mm2
Initial particle strength, q0,2: MPa37·5
Size effect on particle strengthq0d−3/3·3

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