Development of light weight steel door with FRP designed by topology optimization (Second Report)

Abstract

In order to reduce weight of steel doors, lightweight steel doors with FRP stiffening member was developed. The FRP stiffening member was designed by topology optimization. The FRP stiffening member was fabricated and installed inside the outer panel. Panel stiffness tests were carried out. As a results, when the thickness of the outer panel was 0.5mm, the panel stiffness were remarkably reduced compared with the thickness of 0.6mm. On the other hand, the outer panel in the thickness of 0.5mm with FRP stiffening member achieved 12% reduction in weight and 244% improvement in panel stiffness at the weakest point.