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A numerical study on the mechanisms of Dyneema® quasi-isotropic woven panels under ballistic impact

机译：抗弹性冲击下Dyneema®准激光织物机制的数值研究

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摘要

Quasi-isotropic (QI) fabric panels were recently found to have a promising performance against ballistic impact, compared with the aligned panels, since more areas in the followed plies are transversely deformed in the QI panels forced by the front plies. However, the ballistic mechanisms of QI panels have not been completely elucidated. This study aims to identify the ballistic mechanisms of QI woven fabric panels using finite element method (FEM), focusing on the interference from the back plies towards the front. A yarn-level Dyneema (R) woven fabric model was created, and then validated by the ballistic test results. 2-ply, 3-ply and 4-ply aligned and QI panels were investigated in terms of energy absorption, the initial time of yarn failure, penetration time of panels, and stress distribution within different plies. ImageJ (R) software was used to quantify the areas under stress in different scale ranges in different plies. It was found that QI panels absorbed 6%-8% more energy than aligned panels, and were less vulnerable to be perforated. Moreover, compared with the aligned panels, QI panels overall had approximately 10% larger areas stressed in the front plies. These results were attributed to the fact that QI panels have higher efficiency in stress distribution along the primary yarns in the front and middle plies. The higher efficiency afterwards was ascribed to the higher interference between plies in the QI panels. This study demonstrated the importance of interference in QI panels on stress distribution, and the findings are of great significance for guiding further designs of fabric and composite panels for the ballistic protection.
机译：与对齐的面板相比，最近发现准各向同性（QI）织物板具有对抗弹性冲击的有希望的性能，因为在施加的焊接层中横向变形，因此在前帘布的齐板中横向变形。然而，QI面板的弹道机制尚未完全阐明。本研究旨在使用有限元方法（FEM）来识别QI织物面板的弹道机制，聚焦从背部朝向前方的干扰。创建了纱线水平的Dyneema（R）编织织物模型，然后通过弹道测试结果验证。在能量吸收方面研究了2-Ply，3层和4级对准的和Qi面板，纱线故障，面板穿透时间和不同层内的应力分布的初始时间。 imagej（r）软件用于量化不同尺度范围内的压力下的区域。发现齐板吸收了比对准板的能量更多的6％-8％，并且不太容易受到穿孔。此外，与对齐的面板相比，齐板总体上有大约10％的较大区域压力在前层。这些结果归因于齐面板沿前沿和中间层中的主要纱线具有更高的应力分布效率。之后的效率较高归因于齐面板中的层之间的较高干扰。本研究表明，对齐面板对压力分布的影响的重要性，结果对于引导织物和复合板的进一步设计具有重要意义，以便进行弹道保护。

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  • 来源
    《Composite Structures》 |2020年第3期|111855.1-111855.14|共14页
  • 作者

    Yuan Zishun; Wang Kaichen; Qiu Jiawen; Xu Yue; Chen Xiaogang;

  • 作者单位

    Guangdong Univ Technol Collaborat Innovat Ctr Adv Energy Mat Sch Mat & Energy Guangzhou Key Lab Low Dimens Mat & Energy Storage Guangzhou 510006 Peoples R China;

    Ecole Cent Lille GEMTEX ENSAIT F-59000 Lille France;

    Univ Manchester Sch Mat Manchester M13 9PL Lancs England;

    Chinese Acad Sci Senior Expert Technol Ctr Beijing 100049 Peoples R China;

    Univ Manchester Sch Mat Manchester M13 9PL Lancs England;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Quasi-isotropic panel; Dyneema (R) woven fabric; Ballistic impact; FE modelling; Layer interference;

    机译：准各向同性面板;Dyneema（R）编织面料;弹道撞击;FE模型;层干扰;

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