Issue 53

Y. Lu et alii, Frattura ed Integrità Strutturale, 53 (2020) 325-336; DOI: 10.3221/IGF-ESIS.53.25 333 Fig. 12 shows the welding deformation results measured by Xu under simulation and test. It can be seen from Fig. 12 that the simulation results have higher accuracy and have good consistency with the test. The MSE 、 RMSE and MAE of Xu ’ s result are calculated. The results are shown in Tab. 4. According to Tab. 4, GA-BPNN has higher prediction accuracy. Figure 9: Comparison of the training performance of two neural networks: (a) BPNN, (b) GA-BPNN. Figure 10: The training state of two neural networks: (a) BPNN, (b) GA-BPNN. Figure 11 . Regression of two neural networks: (a) BPNN, (b) GA-BPNN.