Fatigue Life Prediction of Half-Shaft Using the Strain-Life Method

Table 1

The two-dimensional load spectrum.

Mean (N·m)		Amplitude (N·m)
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
		8	25	51	88	135	191	258	335	422	519	624	737	854	974	1101	1234
1	−543	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
2	−455	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
3	−368	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
4	−280	34	4	1	0	0	0	0	0	0	0	0	0	0	0	0	0
5	−193	91	11	2	1	0	0	0	0	0	0	0	0	0	0	0	0
6	−105	320	40	10	3	1	0	0	0	0	0	0	0	0	0	0	0
7	−18	998	126	31	11	4	2	1	0	0	0	0	0	0	0	0	0
8	69	1403	177	44	15	6	3	2	1	1	1	1	0	0	1	0	0
9	157	1386	175	43	15	6	3	1	1	1	0	0	1	0	0	0	0
10	245	1038	131	32	11	5	2	1	0	0	0	0	0	0	0	0	0
11	332	244	30	7	2	1	0	0	0	0	0	0	0	0	0	0	0
12	420	233	29	7	2	1	0	0	0	0	0	0	0	0	0	0	0
13	508	102	12	3	1	0	0	0	0	0	0	0	0	0	0	0	0
14	595	15	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0
15	683	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
16	771	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0