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Table 8 Parameter optimization results (C2)

From: Structural Stress–Fatigue Life Curve Improvement of Spot Welding Based on Quasi-Newton Method

SFFXYSFFZSFMXY
0.04561.07 × 10−50.023
DEFXYDEFZDEMXY
2.77 × 10−52.65 × 10−51.44×10−5
TEFXYTEFZTEMXY
4.58 × 10−57.95 × 10−54 × 10−4