Numerical Analysis of Eccentrically Loaded Cold-Formed Plain Channel Columns

Table 3

Influence of effective length on axially loaded columns C1 to C4.

Column number	𝐿𝑒 (mm)	𝐿𝑒/𝑟min	Elastic buckling load, 𝑃cr (kN)			Ultimate load, 𝑃𝑢 (kN)
			ABAQUS	CUFSM	ABAQUS/CUFSM	ABAQUS	DSM	ABAQUS/DSM
C1	300	13.48	36.53	35.00	1.04	52.46	84.63	0.62
	600	26.96	34.54	33.04	1.05	50.05	63.84	0.78
	900	40.44	34.35	33.11	1.04	48.81	42.52	1.15
	1200	53.92	34.27	33.04	1.04	48.54	30.00	1.62
C2	300	11.69	21.04	20.31	1.04	38.73	75.00	0.52
	600	23.38	20.13	19.67	1.02	28.36	60.33	0.47
	900	35.06	19.69	19.19	1.03	32.86	42.62	0.77
	1200	46.75	19.64	19.16	1.03	33.36	29.85	1.12
C3	300	11.60	43.92	41.95	1.05	54.25	70.62	0.77
	600	23.20	42.86	41.62	1.03	49.73	58.95	0.84
	900	34.80	42.45	41.33	1.03	49.12	44.66	1.10
	1200	46.40	42.24	41.32	1.02	45.83	32.33	1.42
C4	300	12.30	22.69	22.34	1.02	55.19	107.9	0.51
	600	24.60	22.78	22.34	1.02	43.41	84.59	0.51
	900	36.90	22.78	22.34	1.02	41.10	56.91	0.72
	1200	49.20	22.72	22.34	1.02	40.19	39.82	1.01