Crush Behavior of Conical Composite Shells: Effect of Cone Angle and Diameter/Wall Thickness Ratio

摘要

The crush behavior of truncated, conical, foam-filled, empty shells subjected to quasi-static axial crushing is investigated experimentally. Epoxy resin/E-glass shells with cone angles of 0°, 11°, and 22° and with three different diameter-wall thickness ratios were tested. Polyurethane foam with a density of 55 kg/m~3 was used in filled specimens. For empty shells showing an unstable failure mode, energy absorption was increased with the cone angle. In contrast, foam-filled shells showed a stable progressive crushing failure and a reverse trend in energy absorption with the cone angle.