Dynamic Indentation Characteristics for Various Spacings and Indentation Depths: A Study Based on Laboratory and Numerical Tests

Table 3

Micro- and macrosynthetic parameters.

Microparameters	Values	Macroparameters	Value
Minimum radius (mm)	0.3	Uniaxial compression stress, UCS (MPa)	28.3
Rmax/Rmin	1.66
Particle contact modulus (GPa)	9.5
Particle normal/shear stiffness	2.5	Young’s modulus, E (GPa)	2.2
Friction coefficient	0.5
Parallel bond modulus (GPa)	19.5
Parallel normal/shear stiffness	2.5	Poisson ratio	0.23
Parallel bond normal strength (MPa)	16.7
Parallel bond shear strength (MPa)	17.8