Door beam of aluminium alloy

摘要

A door beam to obtain a maximal load and an energy absorption required in no need of increase in weight without occurrence of rupture thereof and to have deformation of a cross-section effected in a stable manner even when a length of the door beam is shortened, wherein a cross-section that a compression-side flange (11) and a tension-side flange (12) are connected parallel to each other, by at least one web (13,14) in a section perpendicular to a length direction and central lines of the compression-side flange and the tension-side flange are shifted from each other. <IMAGE>