Design and Numerical Simulation of Pyramidal Prefolded Patterned Thin-Walled Tubes

Table 4

Geometries and numerical results of traditional and prefolded octagonal tubes.

	c (mm)	h (mm)	(°)	Weight increase	(kN)	reduction (%)	(kN)	SEA (kJ/kg)	SEA increase (%)	Crushing trajectory
OTC	45	0.0	90.0	0.0	137.3	−3.9	71.1	16.2	53.9	—
O3_R25_89	45	0.5	88.4	0.0	124.8	5.5	81.6	18.6	76.5	NCF
O3_R25_88	45	1.0	86.7	0.2	121.2	8.3	80.9	18.4	74.6	CF
O4_R25_89	45	0.4	88.8	0.0	126.1	4.5	86.0	19.6	86.0	NCF
O4_R35_88	45	0.7	87.6	0.2	122.4	7.3	82.9	18.9	79.0	CF
O5_R25_89	45	0.3	89.0	0.0	130.0	1.6	86.4	19.7	86.8	NCF
O5_R25_88	45	0.6	88.0	0.2	124.2	6.0	83.6	19.0	80.4	CF
O6_R25_86	45	1.0	86.7	0.6	127.2	3.7	86.5	19.6	86.0	NF
O6_R25_84	45	1.4	85.1	1.0	124.4	5.8	88.8	20.0	90.1	NCF
O6_R25_80	45	2.4	81.8	1.7	120.1	9.1	89.2	19.9	89.7	CF
O6_R25_76	45	3.4	78.5	2.5	106.1	19.7	85.0	18.9	79.3	CF
O6_R25_72	45	4.5	75.2	3.5	92.6	29.9	84.9	18.7	77.4	CF