爆炸冲击波与破片联合作用下防弹衣复合结构防护效果的数值模拟

王智 常利军 黄星源 蔡志华

王智, 常利军, 黄星源, 蔡志华. 爆炸冲击波与破片联合作用下防弹衣复合结构防护效果的数值模拟[J]. 爆炸与冲击, 2023, 43(6): 063202. doi: 10.11883/bzycj-2022-0515
引用本文: 王智, 常利军, 黄星源, 蔡志华. 爆炸冲击波与破片联合作用下防弹衣复合结构防护效果的数值模拟[J]. 爆炸与冲击, 2023, 43(6): 063202. doi: 10.11883/bzycj-2022-0515
WANG Zhi, CHANG Lijun, HUANG Xingyuan, CAI Zhihua. Simulation on the defending effect of composite structure of body armor under the combined action of blast wave and fragments[J]. Explosion And Shock Waves, 2023, 43(6): 063202. doi: 10.11883/bzycj-2022-0515
Citation: WANG Zhi, CHANG Lijun, HUANG Xingyuan, CAI Zhihua. Simulation on the defending effect of composite structure of body armor under the combined action of blast wave and fragments[J]. Explosion And Shock Waves, 2023, 43(6): 063202. doi: 10.11883/bzycj-2022-0515

爆炸冲击波与破片联合作用下防弹衣复合结构防护效果的数值模拟

doi: 10.11883/bzycj-2022-0515
基金项目: 国家自然科学基金(11972158);军委科技委基础加强计划技术领域基金(2019-JCJQ-JJ-150,2020-JCJQ-JJ-356);湖南省研究生科研创新项目(CX20221044)
详细信息
    作者简介:

    王 智(1997- ),男,硕士研究生,zzhh1821@163.com

    通讯作者:

    蔡志华(1981- ),男,博士,副教授,caizhihua003@163.com

  • 中图分类号: O383.3;TJ810

Simulation on the defending effect of composite structure of body armor under the combined action of blast wave and fragments

  • 摘要: 为增强现有防护装备的性能,设计了一种由聚脲(polyurea,PU)、凯夫拉(Kevlar)和泡沫组成的人体胸部复合防护结构。采用LS-DYNA对胸部复合防护结构在爆炸冲击波与破片冲击下的力学响应进行了数值模拟,分析了防护结构排布类型以及厚度对胸部防护的影响。结果表明:在单独爆炸冲击波作用下,防护结构的不同排布类型对抗爆效果影响较小,PU-Kevlar-泡沫排布结构抗爆效果较好,比透射压力峰值最大的Kevlar-PU-泡沫结构的峰值减小了2.42%;在爆炸冲击波与破片联合作用下,PU-Kevlar-泡沫排布结构防护效果较好,比透射压力峰值最大的PU-Kevlar-PU-泡沫结构的峰值减小了18.49%;适当增加结构的厚度可降低爆炸冲击波与破片联合作用对人体胸部的损伤,但继续增加厚度对防护性能的增益有限。
  • 图  1  有限元模型

    Figure  1.  Finite element model

    图  2  PU和EPP的应力-应变曲线[20-21]

    Figure  2.  Stress-strain curves of PU and EPP[20-21]

    图  3  聚脲涂层结构位移时程曲线

    Figure  3.  Displacement-time history curves of polyurea coating structures

    图  4  爆炸冲击波的传播过程

    Figure  4.  Propagation process of blast wave

    图  5  爆炸载荷下3种结构的压力时程曲线和结构正面中心位移时程曲线

    Figure  5.  Pressure-time history curves and front center displacement-time history curves of three structures under explosion load

    图  6  爆炸冲击波与破片的传播过程

    Figure  6.  Propagation process of blast wave and fragments

    图  7  联合载荷下防护结构的动态响应

    Figure  7.  Dynamic response of protective structure under combined action of blast wave and fragments

    图  8  联合载荷下3种结构的压力时程曲线

    Figure  8.  Pressure-time history curves of three structures under combined action of blast wave and fragments

    图  9  不同PU厚度结构的压力时程曲线

    Figure  9.  Pressure-time history curves of different PU thickness structures

    图  10  不同PU厚度结构的峰值压力

    Figure  10.  Peak pressures of different PU thickness structures

    表  1  Kevlar材料参数[19]

    Table  1.   Parameters of Kevlar [19]

    ρ/(g·cm−3)E1/GPaE2/GPaE3/GPaμ12μ13μ23G12/GPaG13/GPaG23/GPa
    1.3521214.60.310.140.141.21.21.2
    Kf/GPaSc/GPaXt/GPaYt/GPaYc/GPaαSN/GPaS13/GPaS23/GPa
    20.251.21.20.80.50.550.550.55
    下载: 导出CSV

    表  2  PU材料参数[20]

    Table  2.   PU parameter[20]

    ρ/(g·cm−3)E/MPaμC/s−1n
    1.071500.46598.164.52
    下载: 导出CSV

    表  3  TNT炸药材料及状态方程参数[22-23]

    Table  3.   TNT explosive materials and state equation parameters[22-23]

    ρ/(g·cm−3)D/(m·s−1)A/GPaB/GPaR1R2ωE0/(J·m−3)
    1.6369303713.234.150.950.37×109
    下载: 导出CSV

    表  4  空气材料及状态方程参数[24]

    Table  4.   Air materials and state equation parameters[24]

    ρ/(kg·m−3)C0C1C2C3C4C5C6E0/(J·m−3)
    1.2900000.40.402.5×105
    下载: 导出CSV

    表  5  模型验证剩余速度对比

    Table  5.   Residual velocity comparison for model validation

    入射速度/(m∙s−1)剩余速度/(m∙s−1)相对误差/%
    数值模拟实验[26]
    218180197 8.63
    25415017011.76
    下载: 导出CSV

    表  6  靶板背面中心处最大位移

    Table  6.   Maximum displacement at the back center of target plate

    结构配置背面中心最大位移/mm相对误差%
    数值模拟实验[27]
    5.5 mm纯铝板15.4015.621.41
    4 mm铝板+4 mm PU17.3017.672.09
    4 mm PU+4 mm铝板17.8018.151.93
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-11-14
  • 修回日期:  2023-02-22
  • 网络出版日期:  2023-03-23
  • 刊出日期:  2023-06-05

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