A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress

Table 2

The comparison of the experimental results, Miner, Manson, and proposed model for Al-2024 material under two-block loading.

Stress amplitude	Experimental			Miner			Manson		Proposed model
	n1	d1	Result	d2	d2	Dev/%	d2	Dev/%	d2	Dev/%
150–200	86000	0.2	144,500	0.96	0.80	16.8	0.91	5.10	0.88	8.22
	172000	0.4	133,500	0.89	0.60	32.5	0.75	15.45	0.74	15.73
	258000	0.6	81,700	0.54	0.40	26.5	0.54	0.20	0.58	7.41
200–150	30000	0.2	228,700	0.67	0.80	50.5	0.65	5.12	0.68	0.75
	60000	0.4	101,050	0.24	0.60	155	0.45	90.83	0.42	74.79
	90000	0.6	76,050	0.18	0.40	126	0.28	42.33	0.22	23.72