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Table 5 Identified parameters in the Yld2000-2d yield function with an exponent of 8

From: Investigation on Yield Behavior of 7075-T6 Aluminum Alloy at Elevated Temperatures

Temp.
(°C)
\(\alpha_{1}\) \(\alpha_{2}\) \(\alpha_{3}\) \(\alpha_{4}\) \(\alpha_{5}\) \(\alpha_{6}\) \(\alpha_{7}\) \(\alpha_{8}\) \(m\)
25 0.9129 1.0522 1.0654 0.9937 1.0241 1.0014 0.981 0.989 8
130 0.9212 1.0378 0.974 0.9755 1.022 0.9943 0.9835 1.044
180 0.9457 1.0201 0.9957 0.9827 1.0329 1.0581 0.9681 0.9463
230 0.9688 0.997 0.9118 0.9934 1.0395 1.1013 0.9871 1.0094