Investigating the Macro-Micromechanical Properties and Failure Law of Granite under Loading and Unloading Conditions

Table 2

Microparameters of the FJM model after calibration.

Microparameters	Description	Unit	Value
dmin	Minimum particle radius	mm	1.0
dmax/dmin	Particle size ratio	—	1.66
	Radius multiplier	—	1
Nr	Number of elements in radial direction	—	1
Na	Number of elements in circumferential direction	—	3
Ec	Effective modulus of both particle and bond	GPa	76
krat	Normal-to-shear stiffness ratio of both particle and bond	—	1.8
μ	Friction coefficient	—	0.4
σb	Bond tensile strength	MPa	14
cb	Bond cohesion strength	MPa	135
Φb	Friction angle	°	5