编织Kevlar/Epoxy复合材料层合板在冲击荷载下的动态响应

马小敏 李世强 李鑫 王志华 吴桂英

马小敏, 李世强, 李鑫, 王志华, 吴桂英. 编织Kevlar/Epoxy复合材料层合板在冲击荷载下的动态响应[J]. 爆炸与冲击, 2016, 36(2): 170-176. doi: 10.11883/1001-1455(2016)02-0170-07
引用本文: 马小敏, 李世强, 李鑫, 王志华, 吴桂英. 编织Kevlar/Epoxy复合材料层合板在冲击荷载下的动态响应[J]. 爆炸与冲击, 2016, 36(2): 170-176. doi: 10.11883/1001-1455(2016)02-0170-07
Ma Xiaomin, Li Shiqiang, Li Xin, Wang Zhihua, Wu Guiying. Dynamic response of woven Kevlar/Epoxy composite laminatesunder impact loading[J]. Explosion And Shock Waves, 2016, 36(2): 170-176. doi: 10.11883/1001-1455(2016)02-0170-07
Citation: Ma Xiaomin, Li Shiqiang, Li Xin, Wang Zhihua, Wu Guiying. Dynamic response of woven Kevlar/Epoxy composite laminatesunder impact loading[J]. Explosion And Shock Waves, 2016, 36(2): 170-176. doi: 10.11883/1001-1455(2016)02-0170-07

编织Kevlar/Epoxy复合材料层合板在冲击荷载下的动态响应

doi: 10.11883/1001-1455(2016)02-0170-07
基金项目: 

国家自然科学基金项目 11402163

山西省自然科学基金项目 2014011009-1

详细信息
    作者简介:

    马小敏(1988—),男,博士研究生

    通讯作者:

    吴桂英,wgy2005112@163.com

  • 中图分类号: O347.3

Dynamic response of woven Kevlar/Epoxy composite laminatesunder impact loading

  • 摘要: 通过编织Kevlar/Epoxy复合材料层合板的平头弹冲击实验,分析了结构在不同冲量下的变形失效模式以及结构的抗冲击性能。实验表明复合板的变形失效模式主要表现为:(1)弹性变形;(2)复合板表面嵌入失效及整体塑性大变形;(3)背面纤维拉伸断裂及分层失效。基于实验研究,运用LS-DYNA 971有限元程序对铺层数不同的复合板在冲击载荷作用下的动态响应过程进行了数值模拟,模拟结果与实验吻合较好,子弹作用区域边缘处首先发生近似圆形的嵌入失效,而在板背面发生近似正方形的破坏区域;计算中重点分析了铺层数对结构动力响应的影响,在一定冲量范围内,通过对铺层数的优化,能够有效地减小后面板挠度,提高结构的能量吸收效率,增强结构的抗冲击性能。
  • 图  1  实验装置示意图

    Figure  1.  Schematic diagram of experimental devices

    图  2  复合板的变形失效模式

    Figure  2.  The deformation and failure modes of the plates

    图  3  复合板背面中心点位移时程曲线

    Figure  3.  Displacement histories ofthe mid-span in the back face

    图  4  Kevlar纤维复合板有限元模型及冲击实验照片

    Figure  4.  Finite element model of the structure and its photo in the experiment

    图  5  Kevlar纤维复合板受撞击实验与数值模拟对比

    Figure  5.  Comparison of the experimental and simulated final deformation modes under impact

    图  6  子弹和Kevlar纤维复合板作用的过程

    Figure  6.  Process of projectile impacting the Kevlar laminates

    图  7  纤维复合板中应力分布时程曲线

    Figure  7.  Histories of stress distribution in the Kevlar laminates

    图  8  纤维复合板背面中心点量纲一残余挠度随量纲一冲量变化的规律

    Figure  8.  Relation between normalized residual deflectionand normalized impulse at the mid-span on the back face

    图  9  纤维复合板吸能效率随量纲一冲量变化的规律

    Figure  9.  Relation between energy absorption efficiencyand normalized impulse

    表  1  实验数据

    Table  1.   Experimental data

    No. n h/mm v/(m·s-1) I/(N·s) W/mm 变形失效模式
    1 18 5.11 13.30 16.49 1.8
    2 18 4.98 24.70 30.63 8.3
    3 18 5.15 32.60 40.42 12.4 Ⅱ Ⅲ
    4 18 5.13 36.47 45.22 13.5 Ⅱ Ⅲ
    5 18 5.10 36.50 45.26 13.3 Ⅱ Ⅲ
    下载: 导出CSV

    表  2  Kevlar纤维平纹织物的材料参数

    Table  2.   Material properties of the Kevlar composite fabric

    ρ/(kg·m-3) E/GPa Gab/GPa Gca/GPa ν Xt/GPa Xc/GPa Yt/GPa Yc/GPa Sc/GPa
    1 400 59.5 5.18 5.18 0.34 1.20 0.23 1.20 0.23 0.12
    下载: 导出CSV

    表  3  Kevlar纤维复合板在不同速度冲击下实验与数值模拟对比

    Table  3.   Comparison of the experimental and simulated results at different impact velocities

    v/(m·s-1) dmax/mm W/mm
    实验 数值模拟 ε/% 实验 数值模拟 ε/%
    13.30 10.3 9.3 -9.71 1.8 1.5 -16.67
    24.70 14.2 14.8 4.23 8.7 7.9 -9.20
    32.60 18.3 17.6 -3.83 12.4 11.2 -9.68
    36.47 20.7 20.3 -1.93 13.5 13.6 0.71
    36.50 19.9 20.3 2.01 13.3 13.6 2.21
    下载: 导出CSV
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出版历程
  • 收稿日期:  2014-08-13
  • 修回日期:  2014-11-10
  • 刊出日期:  2016-03-25

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