Abstract
For the manufacture of transparent armor of high class protection, as a rule, reinforced silicate glasses, as well as transparent ceramics, are used. Since these materials are resiliently brittle, they can be used only in transparent multilayered barriers with protective back films for protection against high-speed fragmentation elements and bullets. Plexiglass or polycarbonate is most often used as the back layer. The barrier’s face layer must have a hardness substantially higher than the hardness of the drummer’s material, and the Hugonievskii elasticity limit must exceed the shock-wave pressure arising at the initial stage in the barrier. The purpose of this paper is to develop a mathematical model that allows, within the framework of a porous elastic-plastic medium with regard to various fracture mechanisms, to calculate the impact interaction of fragmentation elements with transparent armor. Numerical research was conducted with the help of copyright software systems. Experimental studies of the collision of transparent armor with a splinter simulator in the speed range of 1500 ... 2500 m / s were carried out with the use of throwing installations of the NRI AMM TSU.
Highlights
For the manufacture of transparent armor of high class protection, as a rule, multilayered structures with protective backing films that retain the fragments are used
Structural glass ceramics based on silicate glass, silica and alumina, etc., are mainly used as materials for the transparent armor manufacture
A promising option for creating transparent armor can be the use of a plate of a leucosapphire monocrystal as a face layer, but its cost is very high and there are limitations in the possibility of obtaining large leucosapphires
Summary
For the manufacture of transparent armor of high class protection, as a rule, multilayered structures with protective backing films that retain the fragments are used. The purpose of this paper is to develop a mathematical model that allows, within the framework of a porous elastic-plastic medium [1] with regard to various fracture mechanisms, to calculate the impact interaction of metal fragments with the transparent armor’s elements, a layer of plexiglass in particular.
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