Experimental Investigation and Load Capacity of Slender Cold-Formed Lipped Channel Sections with Holes in Compression

Table 3

Comparison of buckling modes and ultimate capacities obtained from test, FEA, and predictions by using the proposed method.

Specimen	Test buckling mode	FEA buckling mode	Pt (kN)	Decrease of load capacities (%)	Pa (kN)	Pc (kN)	Pt/Pa	Pt/Pc
C7508-CH3-1	L + D + FT	L + D + FT	16.39		16.82	15.48	0.97	1.06
C7508-CH3-2	L + D + FT	L + D + FT	16.58		16.75	15.94	0.99	1.04
C7508-CH5-1	L + D + FT	L + D + FT	15.38	6.70	16.47	15.15	0.93	1.02
C7508-CH5-2	L + D + FT	L + D + FT	15.38	6.70	16.14	14.97	0.95	1.03
C7508-CH7-1	L + D + FT	L + D + FT	14.60	11.43	15.29	13.49	0.96	1.08
C7508-CH7-2	L + D + FT	L + D + FT	14.32	13.13	15.53	13.53	0.92	1.06
C7510-NH-1	FT	FT	27.78		28.06	25.61	0.99	1.08
C7510-NH-2	FT	FT	26.93		27.61	25.32	0.98	1.06
C7510-RH2-1	FT	FT	23.92	12.56	25.03	23.57	0.96	1.01
C7510-RH2-2	FT	FT	24.37	10.91	26.32	24.16	0.93	1.01
C7510-RH4-1	FT	FT	23.96	12.41	24.56	23.22	0.98	1.03
C7510-RH4-2	FT	FT	22.63	17.27	24.90	23.22	0.91	0.97
C7510-RH6-1	FT	FT	21.45	21.59	22.08	21.08	0.97	1.02
C7510-RH6-2	FT	FT	21.07	22.98	22.17	20.98	0.95	1.00
C9008-NH-1	L + D + FT	L + D + FT	23.72		23.94	23.31	0.99	1.02
C9008-NH-2	L + D + FT	L + D + FT	24.52		23.92	23.52	1.02	1.04
C9008-CH3-1	L + D + FT	L + D + FT	22.33	7.42	21.60	22.06	1.03	1.01
C9008-CH3-2	L + D + FT	L + D + FT	22.67	6.01	22.09	22.49	1.03	1.01
C9008-CH5-1	L + D + FT	L + D + FT	21.46	11.03	21.02	21.38	1.02	1.00
C9008-CH5-2	L + D + FT	L + D + FT	20.50	15.00	21.28	21.45	0.96	0.96
C9008-CH7-1	L + D + F	L + D + F	19.18	20.48	19.58	19.09	0.98	1.00
C9008-CH7-2	L + D + F	L + D + F	19.41	19.53	20.03	19.06	0.97	1.02
C9008-RH2-1	L + D + FT	L + D + FT	23.30	3.40	24.62	22.06	0.95	1.06
C9008-RH2-2	L + D + FT	L + D + FT	24.80	x2.82	25.37	22.52	0.98	1.10
C9008-RH4-1	L + D + FT	L + D + FT	22.88	5.14	22.87	22.72	1.00	1.01
C9008-RH4-2	L + D + FT	L + D + FT	22.34	7.38	21.97	22.72	1.02	0.98
C9008-RH6-1	L + D + F	L + D + F	19.35	19.78	19.49	20.48	0.99	0.94
C9008-RH6-2	L + D + F	L + D + F	19.50	19.15	20.89	20.57	0.93	0.95
C8008-NH-1	L + D + FT	L + D + FT	20.37		19.73	20.83	1.03	0.98
C8008-NH-2	L + D + FT	L + D + FT	20.99		20.63	20.53	1.02	1.02
C8008-CH3-1	L + D + FT	L + D + FT	19.30	6.67	18.59	19.24	1.04	1.00
C8008-CH3-2	L + D + FT	L + D + FT	19.45	5.95	18.37	19.69	1.06	0.99
C8008-CH5-1	L + D + FT	L + D + F	18.38	11.12	17.33	19.16	1.06	0.96
C8008-CH5-2	L + D + FT	L + D + FT	18.20	11.99	17.51	19.19	1.04	0.95
C8008-CH7-1	L + D + F	L + D + F	17.27	16.49	17.03	17.50	1.01	0.99
C8008-CH7-2	L + D + F	L + D + F	16.90	18.28	17.21	17.51	0.98	0.97
C8008-RH2-1	L + D + FT	L + D + FT	20.60	0.39	19.91	19.68	1.03	1.05
C8008-RH2-2	L + D + FT	L + D + FT	19.67	4.88	19.76	20.00	1.00	0.98
C8008-RH4-1	L + D + F	L + D + F	19.18	7.25	19.28	19.80	0.99	0.97
C8008-RH4-2	L + D + F	L + D + F	19.40	6.19	18.77	19.90	1.03	0.97
C8008-RH6-1	L + D + F	L + D + F	18.34	11.32	18.19	18.66	1.01	0.98
C8008-RH6-1	L + D + F	L + D + F	17.16	17.02	17.74	18.10	0.97	0.95
Average							0.989	1.008
Standard deviation							0.038	0.040
Coefficient of variation							0.039	0.040