Research Article
Study on Rail Profile Optimization Based on the Nonlinear Relationship between Profile and Wear Rate
Table 2
Prediction value and simulation value of rail profile test sample (unit: mm2/t).
| Sample number | Test set number | Actual value/(1 × 10−5) | Predicted value/(1 × 10−5) | Relative error of prediction |
| 1 | 68 | 2.284 80 | 2.356 34 | 0.031 | 2 | 40 | 2.442 84 | 2.902 20 | 0.188 | 3 | 8 | 8.671 44 | 8.675 86 | 0.001 | 4 | 75 | 2.284 27 | 2.167 98 | 0.051 | 5 | 55 | 2.175 62 | 2.079 62 | 0.044 | 6 | 81 | 1.849 64 | 1.941 25 | 0.050 | 7 | 88 | 2.332 26 | 2.370 25 | 0.016 | 8 | Standard profile | 1.821 16 | 1.930 89 | 0.060 | 9 | 72 | 2.392 57 | 2.441 49 | 0.020 | 10 | 41 | 2.426 71 | 2.336 16 | 0.037 | 11 | 28 | 2.113 32 | 2.171 55 | 0.028 | 12 | 74 | 2.199 49 | 2.154 17 | 0.021 | 13 | 6 | 1.910 62 | 2.018 01 | 0.056 | 14 | 54 | 2.032 37 | 2.073 41 | 0.020 | 15 | 35 | 2.256 79 | 2.251 93 | 0.002 | 16 | 79 | 6.349 41 | 6.401 07 | 0.008 | 17 | 52 | 2.466 93 | 2.387 55 | 0.032 | 18 | 12 | 1.963 65 | 2.100 11 | 0.069 | 19 | 22 | 2.325 47 | 2.048 68 | 0.119 | 20 | 44 | 2.581 89 | 2.554 69 | 0.011 |
| Mean error of prediction | | 0.043 |
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