Numerical and experimental investigations into ballistic performance of hybrid fabric panels
Numerical and experimental investigations into ballistic performance of hybrid fabric panels
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DOI：
10.1016/j.compositesb.2013.10.019
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发表时间：
2014-03-01
影响因子：
13.1
通讯作者：
Wells, Garry
中科院分区：
文献类型：
--
作者：
Chen, Xiaogang;Zhou, Yi;Wells, Garry
坚固、低密度的纤维一直是防弹的首选材料，但在制造既保护又轻便的防弹衣方面，纤维的选择有限。除了开发改良纤维外，还需要其他方法来制造更具防护性和更轻的防弹衣。本文报道了一种用于防弹的混杂织物面板的研究。采用有限元方法对十二层织物模型中不同层次织物的冲击响应进行了预测。研究发现，织物的前层更容易在剪切过程中断裂，而后层的织物更容易在拉伸时失效。这表明，前层采用抗剪材料，后层采用抗拉材料，可以提高织物面板的抗弹性能。采用有限元和实验相结合的方法，对超高相对分子质量聚乙烯(UHMWPE)机织和单向(UD)材料两种结构的失效模式和弹道冲击响应进行了分析。结果表明，机织结构具有较好的抗剪切性能，UD结构具有较好的抗拉伸性能和较宽的弹道冲击横向挠度。用这种面料设计了两种类型的混合防弹板。试验结果表明，机织物贴近冲击面，UD材料作为后层，其防弹性能优于逆序构造的面板。研究还发现，混杂防弹板中机织材料与UD材料的最佳比例为1：3。混杂纤维防弹板防弹性能的提高，可以减少材料的使用，从而减轻防弹衣的重量。皇冠版权所有(C)2013由爱思唯尔有限公司出版。保留所有权利。
Strong, low density fibres have been favoured materials for ballistic protection, but the choice of fibres is limited for making body armour that is both protective and lightweight. In addition to developments of improved fibres, alternative approaches are required for creating more protective and lighter body armour. This paper reports on a study on hybrid fabric panels for ballistic protection. The Finite Element (FE) method was used to predict the response of different layers of fabric in a twelve-layer fabric model upon impact. It was found that the front layers of fabric are more likely to be broken in shear, and the rear layers of fabric tend to fail in tension. This suggested that using shear resistant materials for the front layer and tensile resistant materials for the rear layer may improve the ballistic performance of fabric panels. Two types of structure, ultra-high-molecular-weight polyethylene (UHMWPE) woven and unidirectional (UD) materials, were analyzed for their failure mode and response upon ballistic impact by using both FE and experimental methods. It was found that woven structures exhibit better shear resistance and UD structures gives better tensile resistance and wider transverse deflection upon ballistic impact. Two types of hybrid ballistic panels were designed from the fabrics. The experimental results showed that placing woven fabrics close to the impact face and UD material as the rear layers led to better ballistic performance than the panel constructed in the reverse sequence. It has also been found that the optimum ratio of woven to UD materials in the hybrid ballistic panel was 1:3. The improvement in ballistic protection of the hybrid fabric panels allows less material to be used, leading to lighter weight body armour. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.