Research on the energy absorption properties of aluminum foam composite panels with enhanced ribs subjected to uniform distributed loading

A new design of aluminum foam composite panels with enhanced ribs was proposed, and the energy absorption property of it was analyzed by combining dynamic testing and numerical simulation. The optimization of aluminum foam composite panels with enhanced ribs was investigated assuming that the panels had the same total mass. An Instron drop hammer test machine was used to study the dynamic compressive behavior of the new composite panels and the impact deformation characteristics of the components. Finite element method (FEM) software was employed to simulate the loading process, and the simulation results were compared with the experimental data for validating the reliability of the model. The effect of rib-mass ratio on the energy absorption property was investigated, and the energy absorption capacities of the new composite panels and conventional sandwiches were compared at different impact velocities. The analysis shows that, compared with conventional sandwich panels, aluminum foam composite panels with enhanced ribs have better energy absorption subjected to uniform distributed loading; and both rib-mass ratio and impact velocity have an effect on the normalized energy absorption. The results of this study can be a reference for related academic research and engineering application.