Effect of Installation Position of Concave Geometry in Cross Section of Thin-walled Polygonal Shell Members on Progressive Plastic Buckling Behavior

Abstract

By using numerical analysis, the effect of installation position of concave geometry in cross section of thin-walled polygonal shell member on progressive plastic buckling was studied to verify the robustness of a design scheme for Crash Boxes with high crash energy absorption. Analytical results showed that plastic buckling behavior is depended upon the width of plane, W_p between ridgelines in cross section without relations of the installation position of concave geometry. In summarized, the robustness of a design scheme of installing concave geometry in cross section to control W_p was verified to ensure high energy absorption by stable plastic buckling.