Table 2 Parameters of the HJC constitutive model for gray sandstone.
From: Modification and validation of cracked zone range under coupled in-situ stress and blasting load
Basic mechanical parameters | Strength parameters | Damage parameters | Pressure parameters | ||||
|---|---|---|---|---|---|---|---|
ρ | 2560 kg·m−3 | A | 0.287 | D1 | 0.05 | Pc | 36.44 MPa |
fc | 109.33 MPa | B | 0.843 | D2 | 1.0 | μc | 6.79 × 10–3 |
G | 2.53 GPa | C | 0.0046 | EFMIN | 0.01 | Pl | 2.0 GPa |
T | 2.18 MPa | N | 0.398 | FS | 0.035 | μl | 0.1328 |
SFMAX | 20.0 | K1 | 39 GPa | ||||
EPSO | 1.0e-11 | K2 | −223 GPa | ||||
K3 | 550 GPa | ||||||
