Name:Nanami Yamada Thesis Title:Study on the Buckling of Compressive Stiffened Plates Using Bulb Plates Supervisor:Eiji Iwasaki Abstract: This study evaluates the buckling behavior and load capacity of compressive stiffened plates with bulb plate stiffeners by numerical analysis. Compared with flat ribs, bulb plates are more effective when the stiffness ratio is near the required value and when the stiffener is under compression.