Dynamic buckling of simply supported columns under axial slamming

Dynamic buckling properties of simply supported columns under axial fluid-s olid slamming are experimentally investigated in this study. By observing t he elastic-plastic responses of columns, the dynamic buckling criterion and the dynamic plasticity criterion of columns are defined and the relevant c ritical impulses are determined. The effect of the slenderness ratio of the column on the elastic-plastic dynamic buckling properties is also examined . The dynamic buckling characteristics of fluid-solid slammed columns are c ompared and discussed with respect to those of columns under solid-solid im pact. It is found that they are different from those of columns subjected t o either impulsive impact or impact owing to suddenly applied load.