Research Article
A Modified Walker Model Dealing with Mean Stress Effect in Fatigue Life Prediction for Aeroengine Disks
Table 4
The comparison of estimated results of each mean stress models versus experimental data for simulated specimens.
| | Specimen | Experimental fatigue lives | Median fatigue life | Predicted fatigue lives | | Goodman | Morrow | SWT | Walker | M. Walker |
| | Bolt-hole specimen | 20546, 24287, 15746, 8689, 24644, 9601, 25162 | 16977 | 28047 | 35276 | 13234 | 20276 | 14976 |
| | Error | / | 65.2% | 107.8% | −22.0% | 19.4% | −11.8% |
| | Run-way hole specimen | 14572, 26378, 60050, 53267, 151668, 51627, 46216, 28838, 8079, 12174, 13368 | 29867 | 10823 | 48642 | 19569 | 21015 | 21188 |
| | Error | / | −63.8% | 62.9% | −34.5% | −29.6% | −29.1% |
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