Experimental Study on Variable-Amplitude Fatigue of Welded Cross Plate-Hollow Sphere Joints in Grid Structures

Table 2

The variable-amplitude fatigue test data of WCPHSJ under program block.

Specimen label	(MPa)	(MPa)	(MPa)			Stress histogram of variable-amplitude fatigue
KQ-4-1	26.38	3.09	23.29	12.97	0.117
	28.37	3.29	25.08	44.35	0.116
	29.36	3.39	25.97	19.24	0.115
KQ-4-3	32.35	3.68	28.67	19.05	0.114
	28.37	3.29	25.08	107.37	0.116
	26.38	3.09	23.29	124.87	0.117
	25.38	2.99	22.39	27.89	0.118
KQ-4-5	24.38	2.89	21.49	161.48	0.118
	32.35	3.68	28.67	12.11	0.114
KQ-4-7	23.39	2.79	20.60	49.60	0.119
	24.38	2.89	21.49	50.30	0.118
	25.38	2.99	22.39	10.68	0.118
KQ-4-8	25.38	2.99	22.39	25.03	0.118
	26.38	3.09	23.29	53.07	0.117
	28.37	3.29	25.08	44.35	0.116
	29.36	3.39	25.97	21.56	0.115
	34.83	3.93	30.90	14.04	0.113
KQ-5-4	35.33	3.53	31.80	40.0	0.1
	37.02	3.70	33.32	18.41	0.1
KQ-5-6	36.17	3.62	32.55	40.0	0.1
	37.86	3.79	34.07	40.0	0.1
	39.54	3.95	35.59	40.0	0.1
	41.22	4.12	37.10	40.0	0.1
	42.90	4.29	38.61	13.03	0.1
KQ-5-10	33.65	3.37	30.28	40.0	0.1
	35.33	3.53	31.80	25.05	0.1
KQ-5-12	42.22	4.22	38.00	40.0	0.1
	44.44	4.44	40.00	40.0	0.1
	46.67	4.67	42.00	24.75	0.1
KQ-5-15	31.97	3.20	28.77	40.00	0.1
	33.65	3.37	30.28	40.00	0.1
	35.33	3.53	31.80	40.00	0.1
	38.70	3.87	34.83	8.24	0.1
KQ-5-19	25.38	2.54	22.84	40.0	0.1
	26.38	2.64	23.74	40.0	0.1
	28.37	2.84	25.53	40.0	0.1
	29.36	2.94	26.42	14.05	0.1
KQ-5-20	35.33	3.53	31.80	40.0	0.1
	37.02	3.70	33.32	40.0	0.1
	38.70	3.87	34.83	40.0	0.1
	40.38	4.04	36.34	40.0	0.1
	42.33	4.23	38.10	52.87	0.1
KQ-7-10	25.38	2.99	22.39	131.83	0.118
	24.38	2.89	21.49	161.48	0.118
	32.35	3.68	28.67	178.96	0.114
KQ-7-12	23.39	2.79	20.60	49.6	0.119
	24.38	2.89	21.49	50.3	0.118
	25.38	2.99	22.39	40.6	0.118
	26.38	3.09	23.29	39.94	0.117

Note. , axial load of fatigue specimens (kN); , width of crossed plate; , thickness of sphere; , nominal stress of fatigue specimens; , stress range; , stress ratio.