Author(s)

M. Boutros & M.Keys

Abstract

An analytical model for the analysis of beams with pinned ends is presented. The deflection shape accounts for the stretching (membrane) force. The elastic- plastic beam is analysed under impulsive loading using the equation of motion derived by the virtual work principle. Elastic and plastic strain rate effects are considered as viscous damping. An apparatus to test beam specimens subjected to impulsive loading is presented. It comprises a moving carriage tended by springs. Mild steel specimens 400mm long and 10 to 20mm thick softened by annealing were tested. The comparisons of the analytical and experimental results show a good agreement. This model is also compared with the results of rigid-segment models. The comparisons show that it is

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