Study on the Effect of Amygdales on Mechanical Characteristics of Basalt Using the Combined Finite-Discrete Element Method

Table 1

Mesoparameters of this Irazu-HM.

Property	Matrix	Amygdale	Interface
Density (kg·m^−3)	2900	2000	—
Young’s modulus (GPa)	45	15	—
Poisson’s ratio (-)	0.15	0.20	—
Mode I fracture energy (J·m^−2)	100	30	60
Mode II fracture energy (J·m^−2)	1000	300	600
Tensile strength (MPa)	18	4	6
Friction coefficient (-)	0.84	0.6	0.7
Cohesion (MPa)	65	15	40
Fracture penalty (GPa)	450	150	150
Normal penalty (GPa·m)	450	150	150
Tangential penalty (GPa·m^−1)	450	150	150