分段PELE弹体冲击多层靶板数值分析

周敬辕 丁亮亮 汤文辉 冉宪文

周敬辕, 丁亮亮, 汤文辉, 冉宪文. 分段PELE弹体冲击多层靶板数值分析[J]. 高压物理学报, 2018, 32(5): 054101. doi: 10.11858/gywlxb.20180514
引用本文: 周敬辕, 丁亮亮, 汤文辉, 冉宪文. 分段PELE弹体冲击多层靶板数值分析[J]. 高压物理学报, 2018, 32(5): 054101. doi: 10.11858/gywlxb.20180514
ZHOU Jingyuan, DING Liangliang, TANG Wenhui, RAN Xianwen. Numerical Analysis of Segmented PELE Penetrating Multi-layer Target[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 054101. doi: 10.11858/gywlxb.20180514
Citation: ZHOU Jingyuan, DING Liangliang, TANG Wenhui, RAN Xianwen. Numerical Analysis of Segmented PELE Penetrating Multi-layer Target[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 054101. doi: 10.11858/gywlxb.20180514

分段PELE弹体冲击多层靶板数值分析

doi: 10.11858/gywlxb.20180514
详细信息
    作者简介:

    周敬辕(1994—), 男, 硕士研究生, 主要从事材料力学动态性能研究. E-mail: zhoujingyuan12@163.com

    通讯作者:

    汤文辉(1964—), 男, 博士, 教授, 主要从事高压物理与工程力学研究. E-mail: wenhuitang@163.com

  • 中图分类号: O389;TJ41

Numerical Analysis of Segmented PELE Penetrating Multi-layer Target

  • 摘要: 为了实现侵彻体对多层靶板的高效毁伤,采用数值模拟方法研究了分段式横向效应增强体(PELE)对4层金属靶的侵彻效应,获得了弹体侵彻速度和靶板厚度对弹体终点效应的影响。结果表明,分段PELE弹侵彻4层靶的靶后效果优于普通PELE弹。与金属杆相比,分段PELE弹侵彻多层靶后的弹孔直径更大。弹丸贯穿各层靶板后壳体的径向速度峰值随着靶板厚度的增加而增大,而壳体破碎长度并不随之线性变化。提高弹丸侵彻速度时,弹丸穿过第1层靶板后壳体破碎长度的变化趋势与径向速度峰值的变化相似,穿过第2层和第3层靶板后壳体破碎长度和径向速度峰值在侵彻速度为1.4 km/s时达到极大值,随后下降,而穿过第4层靶板后壳体破碎长度和径向速度峰值随着初速度的增加而增大。

     

  • 图  弹体结构

    Figure  1.  Projectile structure

    图  有限元模型

    Figure  2.  Finite element model

    图  弹体轴向速度-时间曲线

    Figure  3.  Axial velocity-time curve for projectile

    图  不同靶板厚度条件下壳体的径向速度峰值和破裂长度

    Figure  4.  Peak radial velocity and crushing length of shell under different thicknesses of target plate

    图  两种弹体侵彻不同厚度靶板的弹孔直径

    Figure  5.  Layer thickness effect on diameter of crater on multi-layer targets

    图  钨合金杆和分段PELE杆在多层靶中造成的开孔大小差异

    Figure  6.  Relative difference in diameters of craters caused by tungsten alloy rod and segmented PELE penetration

    图  不同侵彻速度下壳体的径向速度峰值和破裂长度

    Figure  7.  Peak radial velocity (a) and length of broken PELE shell (b) after different velocity penetration

    表  1  材料参数

    Table  1.   Material parameters

    Material ρ0/(g·cm-3) E/GPa G/GPa ν Constitutive model
    Tungsten alloy 17.67 354 138 0.28 Johnson-Cook
    Aluminum 2.70 69 0.33 Plastic_Kinematic
    921 steel 7.85 210 78 0.30 Johnson-Cook
    下载: 导出CSV

    表  2  弹壳未破裂长度

    Table  2.   Length of unbroken PELE shell after penetration

    Projectile type Lr/mm
    1st layer 2nd layer 3rd layer 4th layer
    Segmented PELE 39.75 22.82 5.12 0
    Normal PELE 31.49 8.71 0 0
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-02-04
  • 修回日期:  2018-03-27

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