Microcrack Growth Properties of Granite under Ultrasonic High-Frequency Excitation

Table 1

Mesomechanical parameters of rock model.

Name	Density ρ	Effective modulus of particle, Ec	Ratio of normal to shear stiffness of the particle	Particle friction coefficient	Parallel bond tensile strength	Parallel bonding cohesion	Parallel bond friction angle	Normal stiffness per unit area of smooth stiffness model	Shear stiffness per unit area of smooth stiffness model
Mica	2900	20	2.5	0.5	300	600	20	2.19e^13	8.78e^12
Feldspar	2800	40	2.5	0.5	400	800	30	4.65e^13	1.86e^13
Quartz	3000	60	2.5	0.5	500	1000	40	7.90e^13	3.16e^13