驱动冲击对薄纤维金属层的多重冲击效应
Anand Pai1, Marcos Rodriguez-Millan2, Chandrakant R Kini1
1Department of Aeronautical and Automobile Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
Scientific reports
|November 9, 2023
概括
这项研究开发了混合纤维金属层材料 (FMLs),用于增强对重复冲击的冲击屏蔽. 最佳的层次测序,特别是纸板和UHMWPE的放置,显著提高了对多个冲击波的抵抗力.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 防务技术 防务技术 技术
背景情况:
- 纤维金属层 (FMLs) 越来越多地用于弹道和爆炸场景的防护盔甲.
- 现有的研究主要集中在单一冲击反应上,忽视了在现实应用中对多重冲击抵抗的需求.
- 开发能够承受重复高强度冲击波的材料对于先进的屏蔽结构至关重要.
研究的目的:
- 创建和评估专门设计用于对反复冲击进行冲击屏蔽的混合FML.
- 为了确定FML中的最佳层次序,以最大限度地抵抗多次冲击冲击.
- 为了研究层层的冲击阻抗不匹配对冲击负载下的FML性能的影响.
主要方法:
- 制造多层混合FML,包括AA6061-T6,阿拉米德/环氧,UHMWPE/环氧和纸板/环氧层.
- 使用驱动的冲击管进行冲击冲击实验,以评估关键冲击参数 (马赫数,正脉冲,峰值超压).
- 使用数值模型来预测损伤概况,并验证各种层层次序列的实验结果.
主要成果:
- 变形受到核心层的排列,特别是纸板和UHMWPE层的位置的重要影响.
- 这项研究确定了特定的层层次序列,可以提供对多次冲击冲击的优越抵抗力.
- 量化了冲击冲击特征,并与之前的驱动冲击实验进行了比较.
结论:
- 通过层层的冲击阻抗不匹配实现的功能分级有效地提高了FML性能.
- 核心材料的排列在FML承受重复冲击波冲击的能力中起着至关重要的作用.
- 这项研究为设计用于多次冲击场景的基于FML的先进屏蔽提供了宝贵的见解.
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