Abstract
In this paper, a method to determine the shape of the cross-section of aluminum alloy plates with projections under in-plane bending is proposed. A way to reduce the cross-sectional area of plates with projections, while retaining the constant buckling strength, is provided. The elastic-plastic large deflection analysis with FEM reveals that the ultimate strength of aluminum alloy plates with projections of which cross-section shape is determined by the proposed method, is larger than that without projections.
