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仿鱼鳞片结构的防护装具抗穿甲燃烧弹性能

朱德举 镇鑫楼

朱德举, 镇鑫楼. 仿鱼鳞片结构的防护装具抗穿甲燃烧弹性能[J]. 复合材料学报, 2022, 39(0): 1-8
引用本文: 朱德举, 镇鑫楼. 仿鱼鳞片结构的防护装具抗穿甲燃烧弹性能[J]. 复合材料学报, 2022, 39(0): 1-8
Deju ZHU, Xinlou ZHEN. Performance of the protective gear inspired by fish scale structure against armor-piercing incendiary bullets[J]. Acta Materiae Compositae Sinica.
Citation: Deju ZHU, Xinlou ZHEN. Performance of the protective gear inspired by fish scale structure against armor-piercing incendiary bullets[J]. Acta Materiae Compositae Sinica.

仿鱼鳞片结构的防护装具抗穿甲燃烧弹性能

基金项目: 国防科技创新特区项目(19-H863-03-ZT-003-033-01);湖南省高新技术产业科技创新引领计划项目(2020GK2079)
详细信息
    通讯作者:

    朱德举,博士,教授,博士生导师,研究方向为生物材料多尺度力学行为及仿生设计制备、高性能纤维织物增强水泥基和树脂基复合材料、防弹高性能纤维布的力学特性和有限元分析 E-mail: dzhu@hnu.edu.cn

  • 中图分类号: Q66

Performance of the protective gear inspired by fish scale structure against armor-piercing incendiary bullets

  • 摘要: 借鉴硬骨鱼鳞片的多级结构,采用软硬复合防护理念,本文提出了一种新型双层式柔性防护装具。该仿生防护装具的上层采用周期性叠加的复合鳞片构建鳞片层,下层采用多层超高分子量聚乙烯(UHMWPE)无纺布作为垫层。根据《军用防弹衣安全技术性能要求》(GJB 4300A—2012)标准 III 级要求,对防护装具进行弹道测试和有限元仿真,验证了防护装具的抗穿甲燃烧弹性能和有限元模型的可靠性。结果表明:复合鳞片的陶瓷层厚度是影响防护装具抗侵彻性能的主要因素之一,在总厚度不变的情况下,复合鳞片的层厚比为2∶1时满足防护要求,倾斜复合鳞片对子弹的钝化作用及子弹的横向偏转,叠加鳞片的整体协同能量耗散以及UHMWPE垫层的能量分散作用都是决定仿生装具防护能力的重要作用机制。

     

  • 图  1  仿生防护装具设计示意图:(a) 真实鱼鳞片排列模式[15];(b) 超高分子量聚乙烯(UHMWPE)垫层;(c) 仿生鳞片排列;(d) 单个复合鳞片设计;(e) 仿生防护装具

    Figure  1.  Schematic illustration of the design of bio-inspired protection device: (a) real fish scale arrangement pattern; (b) ultra-high molecular weight polyethylene (UHMWPE) backing layers; (c) bionic scale arrangement; (d) single composite scale design; (e) bio-inspired protection devices

    图  2  防护装具X光图

    Figure  2.  X-ray pictures of protection gears

    图  3  防弹装具(a)与穿甲燃烧弹(b)的有限元模型

    Figure  3.  Finite element model of bulletproof gear (a) and amour-piercing incendiary bullet (b)

    图  4  模型网格划分:(a) 子弹;(b) 整体;(c) 复合鳞片;(d) 垫层

    Figure  4.  Model grid division: (a) bullet; (b) overall; (c) composite scale; (d) backing layers

    图  5  弹道测试后防护装具背部破坏形貌:(a) 样件A;(b) 样件B

    Figure  5.  Back damage morphologies of protection gears after ballistic tests:(a) Sample A; (b) Sample B

    图  6  弹道测试后防护装具X光照片与破坏形貌:(a) 样件A;(b) 样件B

    Figure  6.  X-ray photographs and damage morphologies of protection gears after ballistic tests:(a) Sample A; (b) Sample B

    图  7  穿甲燃烧弹的破坏形貌对比: (a) 试验,(b) 有限元模拟

    Figure  7.  Comparison of the failure morphologies of armor-piercing incendiary bullets: (a) experiments, (b) FE simulations

    图  8  穿甲燃烧弹侵彻防护装具的过程示意图

    Figure  8.  Schematic illustration of the process of the armor-piercing incendiary bullet penetrating the protection gear

    图  9  侵彻过程穿甲燃烧弹的速度与加速度时程曲线

    Figure  9.  The time history curves of the velocity and acceleration of armor-piercing incendiary bullet during penetration

    图  10  Von Mises应力分布:(a) SiC陶瓷层;(b) UHMWPE纤维层;(c)背部垫层

    Figure  10.  Von Mises stress distributions: (a) SiC ceramic layer; (b) UHMWPE fiber layer; (c) backing layer

    表  1  防护装具的仿生鳞片尺寸及垫层数量

    Table  1.   bionic scale size and number of backing layers in protection gears

    Sample namet/mmt1/mmt2/mmRatio of t1/ t2Number of backing layers
    Sample A12661∶150
    Sample B12842∶150
    Notes: t is the thickness of composite scale, t1 is the thickness of SiC layer, t2 is the thickness of UHMWPE layer
    下载: 导出CSV

    表  2  穿甲燃烧弹的弹壳与弹芯材料参数

    Table  2.   Material parameters of the shell and the core of the armor-piercing incendiary bullet

    Material
    parameter
    ρ/(kg·m−3)E/GPaΝSIGY/GPaETAN/GPaBETAFS
    Bullet jacket88581170.40.3450.00.01.0
    Bullet core78502070.330.3550.00.23.0
    Notes: ρ, density; E ,Young's modulus; Ν, Poisson's ratio; SIGY , Yield stress; ETAN , tangent modulus; BETA , hardening parameter; FS , failure strain.
    下载: 导出CSV

    表  3  两套防护装具弹道测试结果

    Table  3.   Experimental result of ballistic tests of two protection gears

    Sample
    name
    Reference
    point
    Bullet
    velocity /
    (m·s−1)
    Backface
    signature /
    mm
    Number of
    penetrated
    backing
    layers
    Sample A1#843-
    2#840
    3#840
    Sample B4#84620.85
    5#84023.46
    6#84926.69
    下载: 导出CSV

    表  4  样件B试验结果与数值模拟结果对比

    Table  4.   Comparison of experimental and numerical results of sample B

    ParametersReference
    point
    Exper-
    iments
    Simula-
    tions
    Differ
    ence
    Remaining length
    of bullet/mm
    4#12.813.44.5%
    5#14.415.57.1%
    6#16.315.55.2%
    Number of
    penetrated
    backing layers
    4#5616.7%
    5#6825.0%
    6#98−12.5%
    Backface
    signature/mm
    4#20.819.75.6%
    5#23.424.23.3%
    6#26.624.29.9%
    Notes: 4# is located in the center of the target scale;5# 6# are located at the junction of two target scales.
    下载: 导出CSV
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  • 收稿日期:  2021-11-03
  • 录用日期:  2021-12-26
  • 修回日期:  2021-12-06
  • 网络出版日期:  2022-01-26

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