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

Table 4

The test results of welded cross plate-hollow sphere joints under constant amplitude load.

Specimen label	(MPa)	(MPa)	(MPa)
KQ-4-2	35.31	3.97	31.34	1.50	100.47	6.00	0.113
KQ-4-4	25.38	2.99	22.39	1.35	104.03	6.02	0.118
KQ-4-6	23.39	2.79	20.60	1.31	200	6.30	0.119
KQ-5-1	26.92	3.03	23.89	1.38	90.27	5.96	0.113
KQ-5-2	48.96	14.69	34.27	1.53	65.41	5.82	0.300
KQ-5-3	43.52	13.05	30.47	1.48	62.71	5.80	0.300
KQ-5-8	46.54	4.65	41.88	1.62	46.11	5.66	0.100
KQ-5-13	95.6	47.8	47.8	1.68	15.72	5.20	0.500
KQ-5-18	49.08	4.91	44.17	1.65	23.70	5.37	0.100
KQ-6-14	57.7	28.8	28.8	1.46	106.37	6.03	0.500
KQ-6-17	65.3	32.7	32.7	1.51	72.8	5.86	0.500
KQ-7-1	32.35	3.68	28.66	1.46	87.27	5.94	0.114
KQ-7-2	23.39	2.79	20.60	1.31	196.44	6.29	0.119
KQ-7-4	31.35	3.58	27.77	1.44	131.60	6.12	0.114
KQ-7-6	30.36	3.49	26.87	1.43	47.59	5.68	0.115
KQ-7-11	28.37	3.29	25.08	1.40	30.10	5.48	0.116
KQ-7-13	28.37	3.29	25.08	1.40	77.27	5.89	0.116
KQ-7-14	26.38	3.09	23.29	1.37	94.54	5.98	0.117
KQ-8-1	54.40	16.33	38.08	1.58	30.94	5.49	0.300

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