Personnel Protection Armor Strength Enhancement by Nested Structures

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Strength of Materials Pub Date : 2024-07-29 DOI:10.1007/s11223-024-00651-7
A. V. Kovtun, V. O. Tabunenko, S. I. Nesterenko
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Abstract

The Armed Forces of Ukraine pay great attention to the development of personnel protection armor. However, despite the availability of protective equipment, the practice of warfare shows that the tasks of protecting military personnel are not fully resolved. The task of developing protective structures against bullets and shrapnel remains urgent. The analysis of scientific and technical information showed that the processes that occur during the impact interaction of elements of mechanical systems have not been fully studied, and the development of means to protect against kinetic damage has not been fully covered in scientific papers. The process of interaction between the impactor and the protective barrier may change if nested structures are used as a protective barrier. The possibility of developing a new method for increasing the strength of armor protection by using nested structures (bullet–cylinder) is investigated. A new analytical dependence for determining the depth of penetration of a bullet into a cylinder is obtained. The novelty of the analytical dependence lies in the absence in the scientific literature of a mathematical model of bullet penetration into a cylinder whose inner diameter is smaller than the outer diameter of the bullet, taking into account the effective friction coefficient between the bullet and the inner surface of the cylinder, and the fact that the depth of penetration of a bullet into a cylinder can be equal to the length of the bullet, or be greater or less than it. On the basis of the proposed analytical dependence for determining the depth of penetration of a bullet into a cylinder, the dependences of the depth of penetration of a bullet into a cylinder on the value of tension (between the bullet and the cylinder) and the thickness of the cylinder are constructed. The research results indicate the fundamental possibility of reducing the depth of penetration of a bullet by using nested structures.

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通过嵌套结构增强人员防护装甲强度
乌克兰武装部队非常重视人员防护装甲的发展。然而,尽管有防护装备,但战争实践表明,保护军事人员的任务并没有完全解决。开发能抵御子弹和弹片的防护结构的任务依然紧迫。对科学和技术资料的分析表明,对机械系统元件在撞击相互作用过程中发生的过程还没有进行充分的研究,科学论文中也没有完全涉及开发防护动能损伤的手段。如果使用嵌套结构作为保护屏障,撞击器和保护屏障之间的相互作用过程可能会发生变化。通过使用嵌套结构(子弹-圆筒),研究了开发提高装甲防护强度的新方法的可能性。研究获得了确定子弹穿透圆柱体深度的新的分析依赖关系。该分析依赖关系的新颖性在于,考虑到子弹与圆柱体内表面之间的有效摩擦系数,以及子弹穿入圆柱体的深度可以等于子弹长度,也可以大于或小于子弹长度这一事实,科学文献中没有关于子弹穿入内径小于子弹外径的圆柱体的数学模型。根据所提出的确定子弹穿入圆柱体深度的分析依赖关系,构建了子弹穿入圆柱体深度与拉力值(子弹与圆柱体之间)和圆柱体厚度的依赖关系。研究结果表明,使用嵌套结构可以从根本上降低子弹的穿透深度。
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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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