Table 2.
Mechanical parameters of contact interface under different bonding states
| Contact state | Normal stiffness (GPa m−1) | Tangential stiffness (GPa m−1) | Cohesion (MPa) | Friction angle (°) |
|---|---|---|---|---|
| Strong | 100 | 100 | 100 | 40 |
| Weak | 10 | 10 | 1 | 40 |
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