“…In order to investigate the effect of conical geometry on the energy absorption characteristics of the tube, the tapered angle is varied from 5 o to 20 o , with steps of 5 o and five wavelengths are considered: 16.286, 19, 22.8, 28.5 and 38 mm (corresponding to the number of corrugation (n) of 7, 6, 5, 4, and 3, λ=(L-L1-L2)/n). The concept design of CCT is similar to our previous work [48]. However, in the previous work, two circular tubes with different diameters were connected by a flat connection, while several conical tubes are used in this study.…”