A Nonlinear Fatigue Damage Model Based on Equivalent Transformation of Stress

Table 6

The comparison of the experimental results, Miner, Manson, and proposed model for 30CrMnSiA material under two-block loading.

Stress amplitude	Experimental				Miner		Manson		Proposed model
	n1	d1	Result	d2	d2	Dev/%	d2	Dev/%	d2	Dev/%
586–482	1200	0.167	36911	0.662	0.833	25.83	0.546	17.52	0.764	15.41
	1800	0.208	32451	0.582	0.792	36.08	0.499	14.26	0.710	21.99
	3000	0.417	16002	0.287	0.583	103.1	0.320	11.50	0.455	58.54
	5000	0.694	6970	0.125	0.306	144.8	0.149	19.20	0.182	45.60
482–586	13,000	0.233	6590	0.917	0.767	16.36	0.963	5.02	0.825	10.03
	15,000	0.269	6489	0.903	0.731	19.05	0.949	5.09	0.808	10.52
	25,000	0.448	5390	0.750	0.552	26.4	0.838	11.73	0.665	11.33
	35,000	0.628	4420	0.615	0.372	39.51	0.652	6.02	0.507	17.56
	45,000	0.807	3054	0.425	0.193	54.59	0.385	9.41	0.320	24.71