层状阿拉米德面料的冲击阻力:对射弹诱导损伤的数值研究
Larisa Titire1, Cristian Muntenita1, Mariana Chivu2
1Faculty of Engineering, "Dunărea de Jos" University, 800008 Galati, Romania.
Polymers
|January 8, 2025
概括
数字模拟显示,一个20层亚拉密布面板成功地以398米/秒的速度拦截了9毫米的卢格弹子,符合NIJ HG1人体盔甲标准. 较少的层或更高的速度无法提供足够的弹道保护.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 弹道学 弹道学 弹道学
背景情况:
- 防护衣对于执法部门至关重要,亚拉米德织物是常见的材料.
- 了解这些织物的弹道冲击行为对于提高保护水平至关重要.
- 现有的标准,如NIJ标准0123.00,定义了基于弹子冲击的保护级别.
研究的目的:
- 用数值模拟来比较分析阿拉米德面料的冲击行为.
- 为了确定亚拉米德织物在冲击时的破坏机制.
- 根据层数和射弹速度变化来评估保护性能.
主要方法:
- 数字模拟NIJ HG1水平弹 (9毫米卢格和.357马格FMJ) 冲击的多层阿拉米德面料板.
- 由于纤维级建模的计算限制,在线层面上建模织物.
- 利用现有文献中获取的线和弹子的材料特性.
主要成果:
- 一个20层亚拉密布面板受到398米/秒的9毫米卢格FMJ RN射弹的冲击,符合NIJ HG1保护要求.
- 受到436米/秒冲击的面板或20层以下的面板表现出快速的应力波传播,严重的变形和完全的穿孔.
- 在未能满足NIJ标准的配置中观察到能量消耗不足.
结论:
- 这项研究强调了撞击速度,弹子类型和阿拉米德织物层数量在弹道阻力中的关键作用.
- 优化的层配置和材料特性是必要的,以满足NIJ标准在各种冲击条件下.
- 这些发现有助于为执法部门开发更有效的弹道防护设备.
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