弹体高速侵彻花岗岩靶体的结构响应特性

韩明海 刘闯 李鹏程 刘子涵 张先锋

韩明海, 刘闯, 李鹏程, 刘子涵, 张先锋. 弹体高速侵彻花岗岩靶体的结构响应特性[J]. 爆炸与冲击. doi: 10.11883/bzycj-2024-0145
引用本文: 韩明海, 刘闯, 李鹏程, 刘子涵, 张先锋. 弹体高速侵彻花岗岩靶体的结构响应特性[J]. 爆炸与冲击. doi: 10.11883/bzycj-2024-0145
HAN Minghai, LIU Chuang, LI Pengcheng, LIU Zihan, ZHANG Xianfeng. A study on structural response characteristics of projectile penetrating on granite target[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0145
Citation: HAN Minghai, LIU Chuang, LI Pengcheng, LIU Zihan, ZHANG Xianfeng. A study on structural response characteristics of projectile penetrating on granite target[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0145

弹体高速侵彻花岗岩靶体的结构响应特性

doi: 10.11883/bzycj-2024-0145
基金项目: 国家自然科学基金(12202205,12141202);
详细信息
    作者简介:

    韩明海(2000- ),男,硕士研究生,minghaidadi@163.com

    通讯作者:

    张先锋(1978- ),男,博士,教授,博士生导师,lynx@njust.edu.cn

  • 中图分类号: O385

A study on structural response characteristics of projectile penetrating on granite target

  • 摘要: 为探究弹体斜侵彻花岗岩靶体的结构响应特性,基于30 mm弹道炮平台,开展了弹体斜侵彻花岗岩靶试验,获得了非正侵彻作用下弹体结构破坏参数。在此基础上,结合数值模拟方法研究了弹体斜侵彻花岗岩靶的弹体结构变形及断裂机制,分析了侵彻初始条件对弹体结构响应的影响规律。研究结果表明:弹体非正侵彻花岗岩靶体时,易发生弯曲和断裂;弹体头尾部所受非对称力是影响弹体响应特性的主要因素,弹体的变形破坏程度由弹体头尾部角速度差峰值大小决定;随着攻角的增大,弹体弯曲程度线性增大,攻角增大到8°时,弹体发生断裂;随着着角的增大,弹体弯曲程度先增大后减小再增大,着角为15°时,弹体弯曲程度最小,着角达到30°时,弹体发生断裂;与着角相比,攻角对弹体结构响应行为的影响更显著;攻角与着角联合作用时,着角的引入会增大弹体临界断裂正攻角,负攻角会削弱弹体抵抗弯曲变形和断裂的能力;撞击速度高于1600 m/s时,弹体撞击速度成为弹体产生不同响应行为的主控因素。
  • 图  1  试验弹体

    Figure  1.  Projectile used in the experiment

    图  2  试验靶体

    Figure  2.  Targets used in the experiments

    图  3  试验布局

    Figure  3.  Experimental layout

    图  4  弹体侵彻条件示意图

    Figure  4.  Condition of penetration

    图  5  弹体飞行姿态分析

    Figure  5.  Flying attitude of projectile

    图  6  弹体侵彻岩石靶动态开坑过程

    Figure  6.  The dynamic process during the cratering stage of the projectile penetration into a granite target

    图  7  靶体典型破坏形貌

    Figure  7.  Photographs of typical destruction on the target

    图  8  不同初始速度下靶体的侵彻深度和开坑体积

    Figure  8.  Depth of penetration and crater volume of target under different velocity

    图  9  不同工况下试验前后弹体的对比

    Figure  9.  Comparison of the projectile before and after the experiment under different working condition

    图  10  有限元模型

    Figure  10.  Finite element model

    图  11  靶体开坑破坏对比

    Figure  11.  Experimental carter damage of target compared with numerical simulation

    图  12  试验4中的弹体头尾部角速度

    Figure  12.  Nose and tail angular velocity of the projectile in test 4

    图  13  试验4中的弹体典型时刻受力分析

    Figure  13.  Force analysis of typical moment of the projectile in test 4

    图  14  弹体头尾部角速度

    Figure  14.  Nose and tail angular velocity of projectile

    图  15  弹体破坏形貌对比

    Figure  15.  Comparisons between simulation and test results for deformation of projectiles

    图  16  侵彻深度结果对比

    Figure  16.  Comparison of the penetration depth results

    图  17  弹体头尾部角速度

    Figure  17.  Nose and tail angular velocity of projectile

    图  18  不同攻角角速度差

    Figure  18.  Angular velocity difference under different yaws

    图  19  弹体弯曲程度及量化方法

    Figure  19.  Bending degree of projectile and quantification method

    图  20  不同着角角速度差

    Figure  20.  Angular velocity difference under different impact angle

    图  21  35°着角弹体头尾部角速度

    Figure  21.  Nose and tail angular velocity of projectile under 35° impact angle

    图  22  35°着角弹体典型时刻受力分析

    Figure  22.  Force analysis of 35° impact angle projectile at typical moment

    图  23  弹体弯曲程度

    Figure  23.  Bending degree of projectile

    图  24  15°着角弹体头尾部角速度

    Figure  24.  Nose and tail angular velocities of projectile with 15° impact angle

    图  25  10°攻角和着角的弹体角速度差对比

    Figure  25.  Comparison of angular velocity difference of 10° yaw and impact angle

    图  26  增大着角时弹体的角速度差

    Figure  26.  Angular velocity difference varying with impact angle

    图  27  增大攻角时弹体的角速度差

    Figure  27.  Angular velocity difference varying with yaw

    图  28  弹体头尾部角速度

    Figure  28.  Nose and tail angular velocities of projectile

    图  29  增大着角弹体角速度差

    Figure  29.  Angular velocity difference varying with impact angle

    图  30  增大攻角弹体角速度差

    Figure  30.  Angular velocity difference varying with yaw

    图  31  弹体弯曲程度

    Figure  31.  Bending degree of projectile

    图  32  不同撞击速度弹体结构响应变化规律

    Figure  32.  A map characterizing the structural response of projectile under different impact velocities

    表  1  弹体主要参数

    Table  1.   Main parameters of projectile

    材料d/mml/mmCRHm/ght/mmHRC
    30CrMnSiNi2A301803550545-50
    下载: 导出CSV

    表  2  弹靶交会初始条件

    Table  2.   Initial condition of projectile-target intersection

    试验编号 v0/(m·s−1) α/(°) β/(°)
    1 467 −1.1 1.1
    2 666 −3.0 3.0
    3 749 2.3 2.3
    4 792 −10.6 10.6
    5 834 9.0 9.0
    6 892 −3.5 3.5
    下载: 导出CSV

    表  3  弹体侵彻花岗岩靶的试验结果

    Table  3.   Test results of projectile penetrating granite target

    试验编号 v0/(m·s−1) α/(°) β/(°) P/mm Vc/cm3 弹体结构破坏
    1 467 −1.1 1.1 90 1660 侵蚀
    2 666 −3.0 3.0 128 4360
    3 749 2.3 2.3 137 5143 弯曲
    4 792 −10.6 10.6 82 2318 断裂
    5 834 9.0 9.0 93 2784 断裂
    6 892 −3.5 3.5 168 10440 弯曲
    下载: 导出CSV

    表  4  不同工况下弹体的质量损失率与长度缩短率

    Table  4.   Mass loss rate and length shortening rate of projectile body under different working condition

    试验编号 v0/(m·s−1) α/(°) β/(°) δ/% γ/%
    1 467 −1.1 1.1 0.8 0.3
    2 666 −3.0 3.0
    3 749 2.3 2.3 2.3 1.7
    4 792 −10.6 10.6 22.3 55.6
    5 834 9.0 9.0 61.1
    6 892 −3.5 3.5 4.0 3.06
    下载: 导出CSV

    表  5  弹体材料参数[41-42]

    Table  5.   Projectile material parameters[41-42]

    材料ρ/(g·cm−3)E/GPaA/MPaB/MPanCv
    30CrMnSiNi2A7.85210131410280.4790.0190.3
    下载: 导出CSV

    表  6  靶体材料参数[43-45]

    Table  6.   Target material parameters[43-45]

    ρ/(g·cm−3) G/GPa fc/MPa ft* fs* A1/GPa A2/GPa A3/GPa B0 B1
    2.66 21.9 167.8 0.04 0.21 25.7 37.84 21.29 1.22 1.22
    T1/GPa Pel/MPa Pco/GPa α0 n A N Q0 B βc
    25.7 125 6.0 1.0 3.0 2.44 0.76 0.68 0.05 0.026
    βt Af nf g*c g*t ξ D1 D2 ε
    0.007 1.78 0.80 0.53 0.7 0.5 0.04 1.0 0.015
    下载: 导出CSV
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  • 收稿日期:  2024-05-17
  • 修回日期:  2024-06-21
  • 网络出版日期:  2024-06-24

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