Numerical Simulation of Interference Effect of Multi Sandwich Structure Reaction Armor to Jet

To enhance the protective capabilities of reactive armor, five different sizes of reactive armor with multi sandwich structure were designed and obtained.The first size of reactive armor added a layer of steel to the middle of the traditional reactive armor, and the second to fifth sizes of reactive armor were designed based on the first one, but the total thickness of the reactive armor is the same as the traditional reactive armor.ANSYS-LSDYNA software was used for numerical simulation.Comparisons between the new reactive armor and the traditional reactive armor were performed, focusing on the moment of jet break, the moment when the jet just collides with the target, the moment when the jet loses interference, and the penetration result of the target.In order to highlight the strength of the interference capacity of the new structure reactive armor in a more direct manner, the six reactive armors were compared in terms of the penetration data with two-layer reactive armor.The simulation results show that the A-type reactive armor of head jet has the longest deflection distance; the interference time of the new structure reactive armor to the jet is longer than that of the traditional reactive armor, and the interference time of the E-type reactive armor to the jet is the longest; A-type reactive armor has the best protection performance; when the reactive armor has the same thickness with the traditional reactive armor, the D-type reactive armor has the best protection effect.The A-type, D-type, and F-type reactive armors were selected for verification experiments.The experimental results show that the numerical simulation results are reliable.