Multilayer Energy-Absorbing Substrate for Two-Layer Barriers with an External Ceramic Layer

A new type of multilayer energy-absorbing substrate has been proposed, the layers of which are stuck together by an elastic glue. When the impactor collides with an obstacle, part of the kinetic energy of this impactor is spent on the displacement of separate layers of the substrate relative to each other, which increases the maximum velocity of penetration of the barrier. The dependence of the maximum velocity of penetration of the barrier on the displacement of the substrate layers, as well as the dependence of the energy spent on sliding layers on the area of the deformed part of the substrate, have been studied. It is shown that, at the same impact energy, the depth of deformation of the proposed substrate is 1.5 times less than that of substrates in which the sliding of layers is absent. The use of the proposed substrate in ceramic protective structures allows one to significantly reduce the surface density of the structure.