Table 3 Model parameter inversion results.
σ3, (MPa) | Axial stress , (MPa) | E0, (GPa | E1, (GPa) | η1, (GPa h) | η2, (GPa h) | F0 | m | λ0 | λ1 | η3, (GPa h) | F0′ | m′ | λ0′ | λ1′ | λ2 | A | R2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5 | 26.26 | 45.51 | 159.63 | 1130.13 | 992.53 | – | – | – | – | – | – | – | – | – | – | – | 0.97 |
31.57 | 62.37 | 367.21 | 2586.02 | 1531.18 | – | – | – | – | – | – | – | – | – | – | – | 0.97 | |
36.76 | 85.23 | 662.85 | 4166.69 | 1706.51 | – | – | – | – | – | – | – | – | – | – | – | 0.96 | |
42.01 | 101.89 | 948.16 | 5136.39 | 2617.59 | 15.37 | 5.21 | 6.39 | 2.85 | – | – | – | – | – | – | – | 0.95 | |
47.26 | 127.54 | 1568.32 | 5295.19 | 3490.23 | 6.95 | 6.58 | 2.03 | 7.96 | 1837.52 | 3.57 | 1.14 | 2.58 | -1.85 | -0.48 | 9.11 | 0.95 | |
20 | 48.16 | 105.34 | 241.98 | 1412.66 | 1359.63 | – | – | – | – | – | – | – | – | – | – | – | 0.98 |
57.79 | 114.29 | 435.97 | 2938.66 | 1988.54 | – | – | – | – | – | – | – | – | – | – | – | 0.98 | |
67.42 | 124.58 | 985.64 | 4629.65 | 2031.55 | – | – | – | – | – | – | – | – | – | – | – | 0.97 | |
77.05 | 137.16 | 1148.37 | 5406.73 | 2845.11 | 5.02 | 2.86 | 3.05 | 7.54 | – | – | – | – | – | – | – | 0.96 | |
86.68 | 187.49 | 2013.85 | 5403.25 | 3921.57 | 4.62 | 4.31 | 1.14 | 3.88 | 2041.69 | 1.96 | 2.03 | 1.13 | -0.37 | -5.01 | 2.88 | 0.95 |
