Abstract
To create protective elements, information is needed on the resistance of various combinations of metal, ceramic, and heterogeneous plates, including layered ones, both in contact and with spacing. In addition, an intensive process is underway to create complex materials such as cermet composites. In this work, for verification of the code, numerical calculations of the breakdown of both monolithic and layered steel barriers by a striker with an ogival nose are performed. A series of 2D and 3D calculations for modeling the processes of penetrating heterogeneous barriers has been performed. It is shown that the resistance of heterogeneous barriers to penetration by a rigid striker is approximately the same, whereas the impact of a deformable striker on heterogeneous barriers shows that the resistance of layered barriers is lower compared to a monolithic barrier, and spacing of layers reduces the resistance of the barrier.
Highlights
The use of steel plates has found wide application in protective elements for any purpose, it has an extensive bibliographic history
The following barriers were considered: (1L) a monolithic steel plate 12 mm thick, (2L) a two-layer barrier consisting of steel plates 2x6 mm thick in contact, (1R) two-layer barrier consisting of steel plates 2x6 mm with spacing of 12 mm, and (2R) same barrier, but the layer spacing was 24 mm
Good agreement was obtained between the experimental data and the results of numerical simulations
Summary
The use of steel plates has found wide application in protective elements for any purpose, it has an extensive bibliographic history. To reduce the specific weight of the protective elements, heterogeneous and gradient materials based on various metals and ceramics are being developed. In [4,5], a method was proposed for creating fundamentally new functionally gradient heterogeneous materials based on B4C ceramic powders with various mass fractions in the initial mixture and Ni plastic metal additive using the combined method of cold gas-dynamic spraying followed by layer-by-layer laser processing. In contrast to [9], the authors of [10,11,12] used a different approach: inclusions of another material, for example ceramics, were introduced directly into the metal matrix in the MMC numerical model. Software has been developed capable of generating three-dimensional models for structurally heterogeneous materials with a complex internal structure compatible with the input format of ANSYS package
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