Research Article
Modified Nishihara Rheological Model considering the Effect of Thermal-Mechanical Coupling and Its Experimental Verification
Table 3
Model fitting parameters (σ3 = 3 MPa, T = 600°C).
| | σ0/MPa | G1/(GPa) | G2/(GPa) | η1/(GPa·min) | η2/(GPa·min) | η3/(GPa·min) | R2 |
| | 35 | 9.02 | 36.88 | 56.65 | N/A | N/A | 0.99 | | 65 | 5.35 | 3.92 | 7.89 | N/A | N/A | 0.98 | | 100 | 5.54 | 17.60 | 24.05 | N/A | N/A | 0.95 | | 135 | 5.79 | 30.85 | 6.86 | 5.01 | N/A | 0.98 | | 175 | 5.88 | 155.93 | 26.49 | 21.15 | N/A | 0.98 | | 175 (accelerated stage) | 5.88 | 155.93 | 26.49 | 43.78 | 5369.8 | 0.99 |
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R2 is the correlation coefficient, N/A = not available.
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