Interactive Buckling of Q420 Welded Circular Tubes under Axial Compression

Table 1

Finite element analysis specimens.

FEM specimen label	Outer diameter (mm)	Thickness (mm)	Diameter-thickness ratio D/t	Slenderness ratio λ	Nondimensional slenderness ratio
D89 × 4	89	4	22	15, 20, 25, 30, 35; 40, 45, 50, 55, 60	0.216∼0.862
D159 × 6	159	6	27
D194 × 6	194	6	32
D480 × 12	480	12	40
D273 × 6	273	6	46
D426 × 8	426	8	53
D508 × 8	508	8	64
D610 × 8	610	8	76