PSI - Issue 60

Balaji Srinivasan et al. / Procedia Structural Integrity 60 (2024) 418–432 Balaji Srinivasan et al. / Structural Integrity Procedia 00 (2019) 000 – 000

424

7

R2 Error

MAE

R2 Error

MAE

No. Stress Factors Notations

No. Stress Factors Notations

XGB

RF

XGB

RF

XGB

RF

XGB

RF

5 6 7 8 9

B-M-Pressure H-M-Axial H-M-Inplane H-M-OutPlane H-M-Torsion H-M-Pressure B-Ins-Axial B-Ins-Inplane B-InsOutPlane B-Ins-Torsion B-Ins-Pressure

0.999 0.996 0.041 0.043 1.000 0.998 0.392 0.548 0.995 0.991 0.319 0.251 0.999 0.998 0.424 0.366 0.997 0.994 0.101 0.107 0.999 0.995 0.054 0.038 0.999 0.998 0.439 0.550 1.000 0.999 0.111 0.129 1.000 0.997 0.514 0.439 0.999 0.998 0.049 0.044 0.999 0.998 0.054 0.042

20 21 22 23 24 25 26 27 28 29 30

H-Ins-Pressure B-Out-Axial B-Out-Inplane B-Out-OutPlan B-Out-Torsion B-Out-Pressur H-Out-Axial H-Out-Inplane H-OutOutPlan H-Out-Torsion H-OutPressure

0.999 0.998 0.071 0.060 1.000 0.998 0.502 0.677 1.000 0.998 0.121 0.131 0.999 0.997 0.450 0.476 0.999 0.997 0.042 0.038 0.999 0.997 0.050 0.047 1.000 0.997 3.506 5.463 1.000 0.998 0.324 0.433 0.999 0.999 4.949 3.112 0.999 0.997 0.187 0.167 0.999 0.997 0.072 0.060

10 11 12 13 14 15

4.1.2. Validation against STP Correlations, FEA Results and ML Predictions The FEA results for Model #6, Model #7 and Model #11 stress contour plots alone are presented. Figure 3 presents the membrane stress and membrane plus bending stress contour plots for Model #6. Similarly, Figure 4 for Model #7 and Figure 5 for Model #11. In Tables 6 and 7, the induced stresses computed from the comprehensive FEA outputs are compared with the STP results and ML predicted results. Table 6 documents the membrane stresses at header and branch and Table 7 presents the results of maximum membrane plus bending stresses for Inner and outer surface of the component. The comparison of charts is presented in Figures 6-11.

Fig. 3. Membrane Stress and Membrane + Bending Stress (MPa) for Model #6