Research Article
Cracking Behavior and Acoustic Emission Characteristics of Rock Containing a Single Preexisting Flaw
Table 1
Microparameters for PBM of the numerical model.
| | Microparameters in PBM | Value |
| | Minimum particle radius, Rmin (mm) | 0.16 | | Particle radius ratio, Rmax/Rmin | 1.66 | | Density of ball, ρ (kg/m3) | 2700 | | Normal-to-shear stiffness ratio, (kn/ks) | 2.1 | | The modulus of ball, Eball (GPa) | 2.3 | | PB radius multiplier | 1.0 | | PB modulus, Epb (GPa) | 2.3 | | PB normal-to-shear stiffness ratio | 2.1 | | PB characteristic tensile strength, (MPa) | 11 | | PB characteristic cohesion, (MPa) | 11 | | Shape parameter, m | 5 | | PB friction angle, ϕ (°) | 30 |
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PB: parallel bond contact model.
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