Research Article
Type I Fracture Toughness Test of Rock-like Materials Based on the Particle Flow Method
Table 3
Particles microscopic parameters of group C.
| | Particle parameters | Parallel bond parameters |
| | Density (kg × m−3) | Ratio of particle size | Contact modulus (GPa) | Contact stiffness (kn × ks−1) | Friction coefficient | Bond modulus (GPa) | Ratio of bond stiffness (pb_kn × pb_ks−1) | Normal bond strength (MPa) | Shear bond strength (MPa) | Multiplier of radius | | 2800 | 1.66 | 5.0 | 3.0 | 0.8 | 35 | 3.0 | 70 | 140 | 1.0 |
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