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Table 3

Optimized parameters of the constitutive equations at room temperature

Hardening rule Parameters
Specimens n Ro (MPa) Q1(MPa) b1 Q2(MPa) b2 Q3(MPa) b3
P 7 874 241 81 312 4 106 0.1
M 7 800 216 62 214 4 102 0.1

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