Calibrating the Micromechanical Parameters of the PFC2D(3D) Models Using the Improved Simulated Annealing Algorithm

Table 2

The range of the microparameters of the contact-bonded material.

Parameter	Description	Range
	Minimum ball radius [m]	0.1e − 3~1
	Ball size ratio, uniform distribution []	1~20
	Ball-ball contact modulus [Pa]	0~100e9
	Ball stiffness ratio []	0~10
	Ball friction coefficient	0~1
(mean)	Contact-bond normal strength, mean [Pa]	0~1000e6
(std. dev.)	Contact-bond normal strength, std. dev. [Pa]	0~100e6
(mean)	Contact-bond shear strength, mean [Pa]	0~1000e6
(std. dev.)	Contact-bond shear strength, std. dev. [Pa]	0~100e6