Numerical Simulation of Impact Resistance of Aluminum Foam Sandwich Structures

Using ABAQUS software, a Voronoi geometric model of aluminum foam sandwich structure material was created to study the effects of the initial velocity of the bullet head, porosity of the aluminum foam sandwich layer, and the choice of materials for the upper and lower panels on the impact resistance of the aluminum foam sandwich structure. Simulation analysis found that as the initial velocity of the bullet head increases, the energy absorption of the aluminum foam sandwich structure increases, and the overall peak bearing capacity also becomes higher. In terms of impact resistance, a structure with a thinner upper panel and a thicker lower panel is more scientific. When the impact energy of the bullet head remains constant, sandwich structures with different porosity levels show that both the bearing capacity and energy absorption are inversely proportional to the porosity rate. When pure aluminum is used as the sandwich panel, the energy absorption proportion of the sandwich layer will be higher than when aluminum alloy is used as the sandwich panel.