The paper deals with a study of the significance of elastoplastic transition state in the dynamic response of Euler beams and thin plates. The study is based on a comparative evaluation of the responses predicted by two independent approaches that use (i) stress-strain relation and basic plasticity theory and (ii) moment-curvature relation; assuming the shape factor to be unity. Responses are evaluated by way of finite-element idealization followed by numerical integration. It is found that the simplified model, based on moment-curvature relations, underestimates the response by a significant amount for longer durations of the applied load.

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