Open Access
Table 7
RSM results versus FEA results.
| Std. order | Run order | Plate thickness (Pt) | Load (Lt) | Root gap (Rg) | FEA results | RSM equations results |
||
|---|---|---|---|---|---|---|---|---|
|
|
|
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| Actual | Actual | Actual | Normal stress (MPa) | Fatigue life (cycles) mean-2SD | Normal stress (MPa) | Fatigue life (cycles) | ||
| 18 | 1 | 6 | 40.5 | 2.5 | 216 | 78790 | 217 | 94263 |
| 7 | 2 | 5 | 62.5 | 3 | 400 | 12439 | 397 | −29740 |
| 20 | 3 | 6 | 40.5 | 2.5 | 216 | 78790 | 217 | 94263 |
| 10 | 4 | 10 | 40.5 | 2.5 | 138 | 305948 | 143 | 337983 |
| 12 | 5 | 6 | 80 | 2.5 | 427 | 10220 | 431 | 79737 |
| 9 | 6 | 4 | 40.5 | 2.5 | 321 | 24177 | 315 | −8445 |
| 5 | 7 | 5 | 32 | 3 | 204 | 92725 | 207 | 141830 |
| 11 | 8 | 6 | 22 | 2.5 | 117 | 491648 | 114 | 400970 |
| 2 | 9 | 8 | 32 | 2 | 127 | 383334 | 123 | 367428 |
| 6 | 10 | 8 | 32 | 3 | 131 | 350672 | 127 | 346553 |
| 8 | 11 | 8 | 62.5 | 3 | 256 | 48330 | 252 | 8087 |
| 19 | 12 | 6 | 40.5 | 2.5 | 216 | 78790 | 217 | 94263 |
| 4 | 13 | 8 | 62.5 | 2 | 249 | 51441 | 246 | 17646 |
| 1 | 14 | 5 | 32 | 2 | 205 | 92952 | 209 | 142275 |
| 17 | 15 | 6 | 40.5 | 2.5 | 216 | 78790 | 217 | 94263 |
| 16 | 16 | 6 | 40.5 | 2.5 | 216 | 78790 | 217. | 94263 |
| 14 | 17 | 6 | 40.5 | 3.5 | 216 | 78790 | 218 | 86489 |
| 13 | 18 | 6 | 40.5 | 1.5 | 216 | 78760 | 217 | 94692 |
| 3 | 19 | 5 | 62.5 | 2 | 400 | 12474 | 397 | −40611 |
| 15 | 20 | 6 | 40.5 | 2.5 | 216 | 78790 | 217 | 94263 |
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