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Table 1 Micro-parameters obtained from the calibration process

From: Comparative Study of the Rock-breaking Mechanism of a Disc Cutter and Wedge Tooth Cutter by Discrete Element Modelling

Micro-parameters

Value

Effective bond modulus Ec (GPa)

36

Ratio of normal to shear stiffness kn/ks

2.0

Friction coefficient between particles μ

0.5

Normal strength σ (MPa)

Shear strength Ï„ (MPa)

120

120