LOCAL BUCKLING OF STIFFENERS IN SHIP PLATING

The aim of the present study is to analytically investigate the charac teristics of local buckling of the stiffener web in the stiffened pane ls under uniaxial compressive loads. A plate-stiffener combination mod el is used as representative of the stiffened panel. The elastic buckl ing condition for the stiffener web is analytically derived by solving the characteristic value problem involving the governing differential equation under the corresponding loading and boundary conditions. A s eries of analyses of stiffener web buckling strength for varying propo rtions of plating and web/flange is carried out. Based on the computed results, a basic investigation of stiffener web buckling is made. Clo sed-form approximate expressions for predicting the buckling strength of the stiffener web are derived taking into account the influence of rotational restraints at the plate-stiffener web connection and stiffe ner web-flange intersections, Design considerations for potentially pr eventing buckling of the stiffener web are then discussed. The compute d basic results for the stiffener web buckling coefficient are documen ted.