Plastic behavior of sandwich beams with fiber metal laminate face-sheets and metal foam core: Combined local denting and overall deformation

In this paper, the plastic behavior of a fully clamped sandwich beam with fiber metal laminate (FML) face sheets and metal foam core under transverse loading is analytically and numerically studied. Based on the modified rigid plastic model, the analytical solution for large deflection of FML sandwich beams under transverse loading is given, in which the local denting deformation is considered. Finite element results are conducted, and analytical solutions capture numerical results reasonably. The influences of material and geometrical parameters on the plastic behavior of FML sandwich beams are considered. The results show that the present analytical model can be used to predict the plastic behavior of fully clamped FML sandwich beams considering the local denting deformation.

Automated summary

This paper analytically and numerically investigates the plastic behavior of a fully clamped sandwich beam with fiber metal laminate (FML) face sheets and metal foam core under transverse loading. The modified rigid plastic model is used to provide an analytical solution for the large deflection of FML sandwich beams, taking into account the local denting deformation. Finite element results are conducted and the analytical solutions are in good agreement with the numerical results. The influences of material and geometrical parameters on the plastic behavior of FML sandwich beams are considered. The results demonstrate that the proposed analytical model can accurately predict the plastic behavior of fully clamped FML sandwich beams considering the local denting deformation.