活性弹丸超高速撞击蜂窝夹芯板双层结构的损伤特性

任思远 武强 张品亮 宋光明 陈川 龚自正 李正宇

任思远, 武强, 张品亮, 宋光明, 陈川, 龚自正, 李正宇. 活性弹丸超高速撞击蜂窝夹芯板双层结构的损伤特性[J]. 爆炸与冲击, 2024, 44(7): 073302. doi: 10.11883/bzycj-2023-0272
引用本文: 任思远, 武强, 张品亮, 宋光明, 陈川, 龚自正, 李正宇. 活性弹丸超高速撞击蜂窝夹芯板双层结构的损伤特性[J]. 爆炸与冲击, 2024, 44(7): 073302. doi: 10.11883/bzycj-2023-0272
REN Siyuan, WU Qiang, ZHANG Pinliang, SONG Guangming, CHEN Chuan, GONG Zizheng, LI Zhengyu. A study of damage characteristics caused by hypervelocity impact of reactive projectile on the honeycomb sandwich panel double-layer structure[J]. Explosion And Shock Waves, 2024, 44(7): 073302. doi: 10.11883/bzycj-2023-0272
Citation: REN Siyuan, WU Qiang, ZHANG Pinliang, SONG Guangming, CHEN Chuan, GONG Zizheng, LI Zhengyu. A study of damage characteristics caused by hypervelocity impact of reactive projectile on the honeycomb sandwich panel double-layer structure[J]. Explosion And Shock Waves, 2024, 44(7): 073302. doi: 10.11883/bzycj-2023-0272

活性弹丸超高速撞击蜂窝夹芯板双层结构的损伤特性

doi: 10.11883/bzycj-2023-0272
基金项目: 国家自然科学基金(12202068);国防科工局空间碎片专项(KJSP2023020201, KJSP2020010402)
详细信息
    作者简介:

    任思远(1988- ),男,博士,工程师,yuandermail@yeah.net

    通讯作者:

    武 强(1987- ),男,博士,高级工程师,wuqiang12525@126.com

  • 中图分类号: O385

A study of damage characteristics caused by hypervelocity impact of reactive projectile on the honeycomb sandwich panel double-layer structure

  • 摘要: 为了研究蜂窝夹芯板双层结构在活性弹超高速撞击下的损伤特性,制备了PTFE(polytetrafluoroethylene)/Al/Cu柱形活性弹丸,利用二级轻气炮对蜂窝夹芯板双层结构靶开展超高速撞击实验,采用超高速摄像机记录了活性弹撞击蜂窝板的碎片云演化过程,分析了蜂窝板的穿孔特性和结构内部各组件的损伤特征;数值模拟了撞击过程,分析了活性弹丸的超高速侵爆效应,获得了碎片云的膨胀运动规律,揭示了活性弹丸冲击-爆轰耦合效应对靶板的损伤机理。结果表明:活性弹丸在蜂窝板上形成较小的入射孔和较大的出射孔,出射孔直径随着撞击速度的提高而增大;蜂窝夹芯板入射孔、出射孔和蜂窝芯穿孔直径随着活性弹体质量的增加而增大,入射孔直径不受蜂窝板厚度和蜂窝芯胞格直径的影响,出射孔和蜂窝芯穿孔直径随着蜂窝板厚度的增大先增大后减小,随着蜂窝芯胞格直径的增大而增大;活性弹产生具有较高膨胀速度的高温碎片云,其膨胀速度随着撞击速度的提高而提高。活性弹的冲击-爆轰耦合效应增大了结构内部组件的毁伤面积。在2~6 km/s速度范围内,活性弹在蜂窝板上形成的出射孔直径约为铝合金弹的1.3~1.8倍,碎片云的膨胀速度是铝合金弹的1.8~3.2倍。相较于铝合金弹丸,活性弹丸增大了蜂窝夹芯板双层结构内部和后板的毁伤面积,提高了毁伤效能。
  • 图  1  各组分的质量分数对PTFE/Al/Cu活性弹能量密度和密度的影响

    Figure  1.  Influences of mass fraction of Cu on energy density and density of PTFE/Al/Cu

    图  2  烧结温度曲线与制备的PTFE/Al/Cu活性材料试件

    Figure  2.  Sintering temperature curve and sintered specimens of PTFE/Al/Cu reactive material

    图  3  活性材料的动态应力-应变曲线

    Figure  3.  Dynamic stress-strain curves of reactive materials

    图  4  超高速撞击实验的示意图

    Figure  4.  Schematic diagram of hypervelocity impact experiment

    图  5  实验用的活性弹丸和蜂窝板双层结构靶

    Figure  5.  Reactive projectile, sabot, and target used in experiment

    图  6  蜂窝夹芯板入射孔实验结果

    Figure  6.  Front perforation of honeycomb sandwich panels

    图  7  蜂窝夹芯板出射孔实验结果

    Figure  7.  Back perforation of honeycomb sandwich panels

    图  8  实验2中高温碎片云的演化过程

    Figure  8.  Evolution process of high-temperature debris cloud in Exp. 2

    图  9  实验2中后板的破坏结果

    Figure  9.  Damage results of the rear wall in Exp. 2

    图  10  铝合金弹丸撞击蜂窝夹芯板穿孔的数值模拟结果

    Figure  10.  Numerical simulation results of perforation of aluminum alloy projectiles impacting honeycomb sandwich panels

    图  11  活性弹丸撞击蜂窝夹芯板穿孔的数值模拟结果

    Figure  11.  Numerical simulation results of perforation of reactive projectiles impacting honeycomb sandwich panels

    图  12  铝合金弹和活性弹撞击下蜂窝板的动能变化

    Figure  12.  Kinetic energy change of honeycomb sandwich panel impacted by aluminum alloy projectile and reactive projectile

    图  13  弹丸撞击后蜂窝夹芯板穿孔直径与撞击速度的关系

    Figure  13.  Relationship between perforation diameter and impact velocity for honeycomb sandwich panels impacted by projectiles

    图  14  弹体质量、蜂窝夹芯板厚度和蜂窝芯胞格直径对穿孔de 影响

    Figure  14.  Influences of projectile mass, honeycomb sandwich panel thickness and honeycomb core diameter on perforation

    图  15  铝合金弹丸以3 km/s的速度撞击18 mm厚蜂窝夹芯板的温度云图

    Figure  15.  Temperature cloud maps of an 18-mm-thick honeycomb sandwich panel impacted by an aluminum alloy projectile with the velocity of 3 km/s

    图  16  活性弹丸以3 km/s的速度撞击18 mm厚蜂窝夹芯板的温度云图

    Figure  16.  Temperature cloud maps of an 18-mm-thick honeycomb sandwich panel impacted by a reactive projectile with the velocity of 3 km/s

    图  17  弹丸撞击后蜂窝夹芯板的碎片云速度与撞击速度的关系

    Figure  17.  Relationship between the debris cloud velocity and impact velocity for a projectile impacting a honeycomb sandwich panel

    图  18  铝合金弹丸撞击蜂窝夹芯板双层结构的后板损伤结果

    Figure  18.  Damage results of the rear wall of the honeycomb sandwich panel double-layer structures impacted by aluminum alloy projectiles

    图  19  活性弹丸撞击蜂窝夹芯板双层结构的后板损伤结果

    Figure  19.  Damage results of the rear wall of the honeycomb sandwich panel double-layer structures impacted by reactive projectiles

    表  1  实验结果

    Table  1.   Experimental results

    编号 弹体 靶板
    材料 尺寸/mm 速度/(km·s−1) 电子组件位置 损伤
    蜂窝板 后板 电子组件 电缆网组件
    1 PTFE/Al/Cu $ \varnothing$7×7 3.06 蜂窝板背面 穿孔 凹陷 穿孔+烧蚀 烧蚀
    2 PTFE/Al/Cu $\varnothing $7×7 3.13 侧面板 穿孔 凹陷 烧蚀 断裂+烧蚀
    3 PTFE/Al/Cu $\varnothing $7×7 3.10 后板正面 穿孔 凹陷 穿孔+烧蚀 断裂+烧蚀
    下载: 导出CSV

    表  2  Al2024和Al5052的主要材料参数[3, 30]

    Table  2.   Main material parameters of Al2024 and Al5052[3, 30]

    材料 ρ/(g·cm−3) G0/GPa Y0/MPa Ymax/MPa β n γ0 C1/(km·s−1) S1 cV/(J·kg−1·K−1)
    Al2024 2.78 28.6 260 760 310 0.185 2.18 5.328 1.338 863
    Al5052 2.68 27.6 290 680 125 0.1 1.97 5.240 1.34 875
    下载: 导出CSV

    表  3  PTFE/Al/Cu的主要材料参数[3]

    Table  3.   Main material parameters of PTFE/Al/Cu[3]

    $ \rho $/(g$ \cdot $cm−3)A/MPaB/MPanI/μs−1bcdy
    2.761.3128.10.574440.220.2220.6661.6
    下载: 导出CSV

    表  4  数值模拟和实验2结果的对比

    Table  4.   Comparison of numerical simulation and Exp. 2 results

    夹芯板入射孔径 夹芯板出射孔径
    实验2/mm 模拟/mm 误差/% 实验2/mm 模拟/mm 误差/%
    10.1 10.8 6.7 66.5 62.4 6.1
    碎片云膨胀速度 碎片云头部速度
    实验2/(km·s−1) 模拟/(km·s−1) 误差/% 实验2/(km·s−1) 模拟/(km·s−1) 误差/%
    1.61 1.68 4.3 2.53 2.76 9.1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-08-02
  • 修回日期:  2024-04-11
  • 网络出版日期:  2024-04-28
  • 刊出日期:  2024-07-15

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