Table 5 Parameter value.
From: The nonlinear energy model and stress–strain model of sandstone
Confining pressure/MPa | 0 | 10 | 20 | 30 | 40 |
|---|---|---|---|---|---|
n | 0.513 | 0.468 | 0.437 | 0.382 | 0.350 |
F0 | 28.702 | 24.854 | 21.542 | 18.426 | 19.236 |
R2 | 0.951 | 0.964 | 0.937 | 0.968 | 0.983 |
Reduced Chi-Sqr | 0.132 | 0.290 | 0.023 | 0.014 | 0.026 |
