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