An analysis of the published modern computational studies of vehicle reservations has shown that modeling multilayer barriers under ballistic impact is of scientific interest and is the most promising. Moreover, approaches based on the Lagrangian formulation are most often used. A computational study has been carried out on the effect of the material of the outer shell of a multilayer protective structure designed for booking vehicles, which contains ceramic sand. The study was conducted on the basis of rational computational models developed using well-established approaches in the LS-DYNA package. The results reflect the influence of the structure of the intermediate layer, the number of layers and the properties of the materials in the protective structures on the penetrating ability of the impactor when using the described modeling method. The study uses a 7.62 mm "APM2" bullet as the most popular armor-piercing bullet, and the muzzle velocity corresponds to a shot from a Dragunov sniper rifle. In the course of the study, the influence of boundary conditions on the stopping power of the studied samples was analyzed. The results of the study reinforce the potential of using ceramics in the form of sand in protective kits, stated in earlier studies, for use in vehicles.

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