楔形装药对射流干扰的数值模拟

周杰 王凤英 原诗瑶 吴鹏

周杰, 王凤英, 原诗瑶, 吴鹏. 楔形装药对射流干扰的数值模拟[J]. 高压物理学报, 2018, 32(2): 025106. doi: 10.11858/gywlxb.20170566
引用本文: 周杰, 王凤英, 原诗瑶, 吴鹏. 楔形装药对射流干扰的数值模拟[J]. 高压物理学报, 2018, 32(2): 025106. doi: 10.11858/gywlxb.20170566
ZHOU Jie, WANG Fengying, YUAN Shiyao, WU Peng. Numerical Simulation of Interference Effect of Wedge-Shaped Charge on Jet[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 025106. doi: 10.11858/gywlxb.20170566
Citation: ZHOU Jie, WANG Fengying, YUAN Shiyao, WU Peng. Numerical Simulation of Interference Effect of Wedge-Shaped Charge on Jet[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 025106. doi: 10.11858/gywlxb.20170566

楔形装药对射流干扰的数值模拟

doi: 10.11858/gywlxb.20170566
基金项目: 

国家自然科学基金 11572292

详细信息
    作者简介:

    周杰(1992—), 男,硕士研究生,主要从事武器系统防护研究.E-mail:450426673@qq.com

  • 中图分类号: O389; TJ411

Numerical Simulation of Interference Effect of Wedge-Shaped Charge on Jet

  • 摘要: 利用ANSYS/LS-DYNA模拟了楔形装药和平板装药对射流的干扰过程,分析了不同楔形角度和装药量对射流的头部速度以及偏转角、杵体速度等数据的影响,并与平板装药的模拟结果对比。结果表明:楔形装甲对射流头部的干扰作用与平板装药相同,但对射流杵体的干扰不同。楔形平板的运动是由板平动和转动组成的二维运动;当楔形角度为正时,楔形装药对射流切割效果较平板装药好,可使射流头部偏转增大,速度减缓,杵体速度减缓,且这种效果随着楔形角度的增加而增加;此外,楔形角度确定后,随着楔形装药量的提高,侵彻位置向楔形上端偏移,接触靶板时间滞后,杵体断裂时间提前,板旋转减弱。

     

  • 图  楔形装药与传统平板装药

    Figure  1.  Wedge-shaped charge and sandwich charge

    图  数值模拟基本模型

    Figure  2.  Elementary model of numerical simulation

    图  楔形装药(2×6)与平板装药干扰射流过程

    Figure  3.  Jet disturbing processes of wedge-shaped charge(2×6) and sandwich charge

    图  干扰射流过程中平板间夹角(a)及射流径向速度(b)的变化曲线

    Figure  4.  Angle between two flying-plates (a) and jet velocity in x-axis (b) in the jet disturbing process

    图  不同楔形角度下楔形装药对射流的干扰

    Figure  5.  Jet disturbing effects of wedge-shaped charge with different wedge angles

    图  射流断裂瞬间的速度图像

    Figure  6.  Velocity images in y-axis at the moment of jet breakup

    图  楔形装药随装药量变化的曲线

    Figure  7.  Jet disturbing effects of wedge-shaped charge with different charge mass

    表  1  楔形装药设定数据

    Table  1.   Experiment data of wedge-shaped charge

    No. Charge type a/mm b/mm θ/(°) m/g
    1 Sandwich 4 4 0 164.16
    2 Wedge-shaped 3 5 0.5 164.16
    3 Wedge-shaped 5 3 -0.5 164.16
    4 Wedge-shaped 2 6 1.0 164.16
    5 Wedge-shaped 6 2 -1.0 164.14
    6 Wedge-shaped 2 4 0.5 123.12
    7 Wedge-shaped 4 6 0.5 205.20
    下载: 导出CSV

    表  2  材料基本参数

    Table  2.   Material parameters

    Material ρ/(g·cm-3) E/GPa γ0 A/MPa B/MPa C n m
    Cu 8.96 47.8 0.90 292 300 0.025 0.310 1.09
    Steel 7.85 77.0 1.35 362 180 0.087 0.568 1.00
    下载: 导出CSV

    表  3  主装药材料基本参数

    Table  3.   Parameters of main explosive

    ρe/(g·cm-3) AJWL/MPa BJWL/MPa R1 R2 ω D/(m·s-1)
    1.72 3.74×105 3 300 4.5 0.95 0.3 8 930
    下载: 导出CSV

    表  4  夹层装药材料基本参数

    Table  4.   Parameters of confined explosive

    pCJ/GPa ρ0/(g·cm-3) I/μs-1 G1/(μs·GPa-1) a c y D/(km·s-1) G2/(μs·GPa-1) b d z g λG2, min
    27 1.717 4.4×1011 310 0 0.667 1.0 6.93 4.0×104 0.667 0.111 2.0 1.0 0
    下载: 导出CSV

    表  5  不同工况下射流侵彻后效靶板数据

    Table  5.   Penetration data under different work conditions

    No. tc/μs tb/μs Lp/mm θf/(°)
    1 140 208 20.0 0.66
    2 138 196 25.5 25.68
    3 147 192 18.0 22.12
    4 138 223 28.8 41.66
    5 149 225 11.4 41.44
    6 133 220 30.2 20.85
    7 157 192 14.1 14.98
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-04-17
  • 修回日期:  2017-05-08

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