Abstract
The concept of ballistic protection is a subject of great importance and is defined as representing all the capabilities of the military vehicle to withstand attacks, in order to ensure protection of the crew during the missions. The projectile-plate impact research must answer a series of questions on designer or fighter behalf, among which the most important would be whether the bullet penetrates or perforates and whether the velocity after the perforation ensures a lethal effect on the personnel. The current paper presents the numerical evaluation of the working together of aluminum layers with plastic materials in a multilayer structure with honeycomb core, on impact with a rigid projectile. Plastic materials have revolutionized many industries and they are increasingly used due to their main properties, low mass and high strength. The research included the use of plastics, the positioning within the panel and the study of the two constructive versions of the structure, with coupled and uncoupled layers. Post-processing model and interpretation of the results are offered and these could be enriched and customized for other situations, similar or less similar, implicitly, the method is provided, finding a quick answer to certain questions.
Highlights
The current ballistic protection systems are in a permanent development, by optimizing the materials, the protection structures and by discovering new materials, which will ensure the most efficient protection
The projectile-plate impact research must answer a series of questions on designer or fighter behalf, among which the most important would be whether the bullet penetrates or perforates and whether the velocity after the perforation ensures a lethal effect on the personnel [3,4,5]
The most accurate answer to the questions about the projectile-plate impact is given by experimental research, but we must not forget that numerical analysis can prepare the way for experimental investigation, leading to saving time and materials
Summary
The current ballistic protection systems are in a permanent development, by optimizing the materials, the protection structures and by discovering new materials, which will ensure the most efficient protection. The projectile-plate impact research must answer a series of questions on designer or fighter behalf, among which the most important would be whether the bullet penetrates or perforates and whether the velocity after the perforation ensures a lethal effect on the personnel [3,4,5]. The most common method of numerical analysis and simulation of the behavior of continuous environments is, without doubt, the finite elements method This method has a wide range of uses, such as static or dynamic analysis, analysis of solid or fluid media (of all types), consideration of any type of applied tasks, the use of a wide range of material models, error control and more [9, 10]
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