The Cross-Scale Life Prediction for the High-Speed Train Gearbox Shell Based on the Three-Interval Method

Table 2

The number of cycles under different stress amplitudes.

	S (MPa)	N	lgS	lgN
1	250	18000	2.39794	4.255273
2	220	40986	2.342423	4.61066
3	200	123000	2.30103	5.089905
4	170	117180	2.230449	5.308031
5	130	705000	2.113943	5.848189
6	110	4070000	2.041393	6.609594
7	100	5890000	2.000000	6.770115
8	94	2995000	1.973128	6.476397
9	91	5832500	1.959041	6.765855
10	88	7095000	1.944483	6.850952
11	85	10100000	1.929419	7.004321