优化轻型复合装甲的弹道性能

IF 3.2 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Amar Prakash, M. Fasil, N. Anandavalli
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引用次数: 1

摘要

本文对三维有限元模型在7.62 AP弹丸作用下的响应进行了全面的研究。该研究利用了Hetherington的装甲复合方程,并结合了Johnson-Holmquist材料模型,分别分析了陶瓷和凯夫拉尔/环氧树脂组件的强度和失效准则。结果突出了复合装甲的显著弹性,证明其能够承受高达1500米/秒的弹丸速度。然而,随着弹道速度极限的增加,装甲会遭受严重的损伤,包括弹丸侵蚀和装甲板分层。通过数值模拟和先进的建模技术,深入研究了弹丸冲击下复合装甲系统的失效模式和能量吸收特性。它研究了关键参数,如速度、加速度、动能、内能、压力分布、位移和损伤进展。分析表明,随着弹丸与装甲的相互作用,动能逐渐减少,强调了能量吸收在防止弹丸穿深方面的关键作用。此外,冲击速度会影响复合装甲内部能量的分布,冲击速度越快,吸收的能量越大,达到一定的阈值。该研究还利用速度历史方法确定了弹道极限速度(V50),并与现有文献验证了研究结果。总的来说,这项研究对复合装甲的局限性提供了有价值的见解,并为设计和改进材料提供了重要的建议,以实现卓越的弹道防护。它强调了达到最大弹道极限的重要性,同时通过优化总装甲厚度来保持轻型装甲结构。这项研究有助于装甲技术的进步,并增强我们对复合材料在高速撞击下的行为的理解。它为开发更坚固的装甲系统提供了有价值的指导,适用于各种防御和保护应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ballistic performance of optimised light weight composite armour

This research paper presents a comprehensive investigation into the response of a 3D finite element model when subjected to 7.62 AP projectiles. The study utilises Hetherington's armour composite equation and incorporates the Johnson-Holmquist material model to analyse the strength and failure criteria of the ceramic and Kevlar/epoxy components, respectively. The results highlight the remarkable resilience of the composite armour, demonstrating its ability to withstand projectile velocities up to 1500 m/s. However, as the ballistic velocity limit increases, the armour experiences significant damage, including projectile erosion and panel delamination. Through numerical simulations and advanced modelling techniques, the paper thoroughly explores the failure modes and energy absorption characteristics of composite armour systems under projectile impact. It investigates key parameters such as velocity, acceleration, kinetic energy, internal energy, pressure distribution, displacement, and damage progression. The analysis reveals a progressive decrease in kinetic energy as the projectile interacts with the armour, underscoring the crucial role of energy absorption in preventing projectile penetration. Moreover, the impact velocity influences the distribution of internal energy within the composite armour, with higher velocities leading to greater energy absorption up to a threshold limit. The study also determines the ballistic limit velocity (V50) using the velocity history approach and validates the findings with existing literature. Overall, the research provides valuable insights into the limitations of composite armour and offers important recommendations for designing and improving materials to achieve superior ballistic protection. It emphasises the significance of reaching the maximum ballistic limit while maintaining a lightweight armour structure by optimising the total armour thickness. This study contributes to the advancement of armour technology and enhances our understanding of the behaviour of composite materials under high-velocity impacts. It offers valuable guidance for the development of more robust armour systems suitable for various defence and protection applications.

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来源期刊
Forces in mechanics
Forces in mechanics Mechanics of Materials
CiteScore
3.50
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