Table 6 Identification parameters of pre-peak unloading damage model under non-yield stress conditions.
From: Experimental study on uniaxial creep characteristics of sandstone with pre-peak unloading damage
σ/MPa | σul/% | EH(U)/MPa | EY(U)/MPa | ηY(U)/MPa |
|---|---|---|---|---|
21 | 70 | 2.47 | 298 | 227.6 |
80 | 2.416 | 264.65 | 208.33 | |
90 | 2.38 | 233.96 | 200.63 | |
24.5 | 70 | 2.67 | 251.8 | 205.1 |
80 | 2.51 | 226.85 | 183.23 | |
90 | 2.5 | 226.84 | 183.12 | |
28 | 70 | 2.808 | 244.98 | 253.64 |
80 | 2.61 | 221.68 | 166.43 | |
90 | 2.6 | 221.43 | 153.43 |
