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Table 12 Optimization parameters of four optimization methods

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

Optimization methodC1C2C3C4
SFFXY10.04560.02
SFFZ0.61.07 × 10−55.95 × 10−7
SFMXY0.60.0234.11 × 10−7
DEFXY02.77 × 10−52.46 × 10−61.84 × 10−5
DEFZ02.65 × 10−51.92 × 10−63.49 × 10−5
DEMXY01.44 × 10−51.04 × 10−60.13
TEFXY04.58 × 10−51.17 × 10−62.30 × 10−4
TEFZ0.57.95 × 10−53.28 × 10−61.50 × 10−4
TEMXY0.54.00 × 10−47.06 × 10−72.00 × 10−4