Abstract
In this paper, large deflections of fully clamped multilayer sandwich beams with metal foam cores are investigated. Based on the yield criteria, analytical solutions are derived for the plastic behavior of fully clamped multilayer sandwich beams loaded by a punch, in which the effects of local denting and core strength on the overall bending are considered. The finite element method is employed to predict the large deflection behavior of multilayer sandwich beams, and the analytical model captures numerical results reasonably well. The effects of core strength, multilayer factor, the size of the loading punch and loading location on the plastic analysis of multilayer sandwich beams are discussed. It is demonstrated that the load-carrying capacity of multilayer sandwich beams increases with a decrease in the multilayer factor and an increase in the core strength and that loading location and the size of the loading punch play important roles in plastic analysis.
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