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Chinese Journal of Mechanical Engineering

Table 7 Optimization results under different initial inputs

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

 

First results

Second results

Third results

SFFXY

3.24 × 10−5

3.37 × 10−5

3.79 × 10−5

SFFZ

2.14 × 10−5

2.10 × 10−5

2.28 × 10−5

SFMXY

0.75

0.72

0.75

DEFXY

0.26

0.23

0.21

DEFZ

0.32

0.32

0.29

DEMXY

1.44 × 10−5

1.44 × 10−5

1.44 × 10−5

TEFXY

0.41

0.39

0.4

TEFZ

0.41

0.39

0.39

TEMXY

0.34

0.34

0.34

R2

0.8784

0.8784

0.8784

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