STUDY ON STRUCTURAL PERFORMANCE OF ALUMINUM RIBBED THIN PLATES UNDER IN-PLANE BENDING LOAD

Effectes of position and cross-section of two ribs on bending strength and proposal for evaluation formula for width-thickness ratio

Abstract

Aluminum alloys have the characteristic that they can be easily manufactured in a cross-sectional shape that is more flexible than steel materials. Normally, in aluminum structural material, the beam is increased in beam height to improve bending rigidity, while reducing the plate thickness to achieve both strength and weight reduction. In the case of extremely thin plate materials, there is a concern that the strength of the beam material will be significantly reduced due to plate buckling. In this paper, the authors propose beam models with the new shape of reinforcing material and verify the relationship between buckling strength and weight reduction using numerical analysis.