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The effect of geometry on the dynamic buckling of longitudinally stiffened panels subject to uniaxial compression

During an intermediate velocity impact in which the duration of loading is an order of milliseconds but shorter than the period of the structure’s first free vibration mode, there is a relationship between impact duration and buckling load. Although this relationship results in higher buckling loads for shorter duration impacts, the precise nature of the correlation depends on a number of factors one of which is geometry. This paper examines a series of longitudinally stiffened panels with varying radii of curvature subject to uniaxial compression. Results are compared to investigate the possibility of identifying behavioural trends relating to geometry.