金属隔层和空气间隙对钝感炸药冲击起爆的影响

彭文杨 钟斌 谷岩 张旭 杨舒棋 舒俊翔 覃双

彭文杨, 钟斌, 谷岩, 张旭, 杨舒棋, 舒俊翔, 覃双. 金属隔层和空气间隙对钝感炸药冲击起爆的影响[J]. 高压物理学报, 2020, 34(3): 033402. doi: 10.11858/gywlxb.20190816
引用本文: 彭文杨, 钟斌, 谷岩, 张旭, 杨舒棋, 舒俊翔, 覃双. 金属隔层和空气间隙对钝感炸药冲击起爆的影响[J]. 高压物理学报, 2020, 34(3): 033402. doi: 10.11858/gywlxb.20190816
PENG Wenyang, ZHONG Bin, GU Yan, ZHANG Xu, YANG Shuqi, SHU Junxiang, QIN Shuang. Effects of Metal Interlayer and Air Gap on the Shock Initiation of Insensitive Explosives[J]. Chinese Journal of High Pressure Physics, 2020, 34(3): 033402. doi: 10.11858/gywlxb.20190816
Citation: PENG Wenyang, ZHONG Bin, GU Yan, ZHANG Xu, YANG Shuqi, SHU Junxiang, QIN Shuang. Effects of Metal Interlayer and Air Gap on the Shock Initiation of Insensitive Explosives[J]. Chinese Journal of High Pressure Physics, 2020, 34(3): 033402. doi: 10.11858/gywlxb.20190816

金属隔层和空气间隙对钝感炸药冲击起爆的影响

doi: 10.11858/gywlxb.20190816
基金项目: 国防技术基础科研项目(JSZL2016212C001);科学挑战专题(TZ2018001);军科委基础加强重点项目(2019-JCJQ-ZD-203)
详细信息
    作者简介:

    彭文杨(1994-),男,硕士研究生,主要从事冲击起爆研究. E-mail: 1028981796@qq.com

    通讯作者:

    谷 岩(1963-),男,研究员,主要从事爆轰物理研究. E-mail: guyan@caep.cn

  • 中图分类号: O383

Effects of Metal Interlayer and Air Gap on the Shock Initiation of Insensitive Explosives

  • 摘要: 为了确定空气间隙和金属隔层对冲击起爆的影响,采用火炮加载蓝宝石飞片冲击起爆$\varnothing $50 mm × 30 mm的A型炸药,产生的冲击波通过空气间隙和金属隔层起爆$\varnothing $50 mm的台阶型B型炸药。在B型炸药的后界面粘贴镀膜氟化锂(LiF)窗口,使用光子多普勒测速仪(PDV)测量金属和B型炸药的后界面速度,进而计算得到金属和B型炸药的冲击波透射压力,再利用阻抗匹配计算得到金属和B型炸药的入射压力。结果表明:传爆药和金属隔层间的空气间隙使冲击压缩过程转变为准等熵压缩和冲击压缩两个过程,同时使冲击波的幅值减小;确定了金属隔层厚度为5 mm时冲击波压力的衰减范围;当使用A型炸药作为传爆药,空气间隙为0.3 mm,金属隔层厚度为5 mm时,B型炸药在7~10 mm之间开始反应。

     

  • 图  样品架

    Figure  1.  Sample holder

    图  装置示意图

    Figure  2.  Schematic of the experimental set-up

    图  台阶型炸药

    Figure  3.  Stage explosive

    图  金属自由界面速度

    Figure  4.  Free surface velocities of metal

    图  金属自由界面速度局部放大

    Figure  5.  Local details for free surface velocities of metal

    图  炸药样品界面速度剖面

    Figure  6.  Interface velocities of the sample explosive

    图  不同厚度样品的界面速度对比

    Figure  7.  Interface velocities comparison of the sample with different thicknesses

    图  波系图

    Figure  8.  Wave interaction diagram

    表  1  实验条件

    Table  1.   Experimental conditions

    Shot No.Dimensions/(mm × mm)Sample
    BoosterAir gapMetal compartmentAir gap
    01$\varnothing$50 × 30$\varnothing $50 × 30$\varnothing $50 × 5
    02$\varnothing $50 × 30$\varnothing $50 × 30$\varnothing $50 × 5
    03$\varnothing $50 × 30$\varnothing $50 × 30$\varnothing $50 × 5$\varnothing $50 × 0.22Explosive B
    04$\varnothing $50 × 30$\varnothing $50 × 30$\varnothing $50 × 5Explosive B
    下载: 导出CSV

    表  2  A型炸药和JWL状态方程参数[14]

    Table  2.   Parameters of explosive A and JWL equation of state

    A/GPaB/GPaR1R2$\overline \omega $ρ1/(g·cm–3)Dj/(km·s–1)uj/(km·s–1)cj/(km·s–1)pj/GPa
    934.77012.7234.61.10.371.8638.872.226.6536.8
    下载: 导出CSV

    表  3  第1次和第2次金属自由界面速度测试计算结果

    Table  3.   Computation results of the first and second test for free surface velocities of metal

    Shot No.u2/(km·s–1)D2/(km·s–1)p2in/ GPap2out/ GPaShot No.u2/(km·s–1)D2/(km·s–1)p2in/ GPap2out/ GPa
    011.0614.70368.82845.675020.9824.65468.82841.817
    1.1134.73468.82848.1931.0584.70068.82845.490
    0.9354.62568.82839.5541.1254.74268.82848.804
    1.1184.73868.82848.4751.1824.77768.82851.644
    1.1334.74668.82849.181
    1.0954.72368.82847.304
    下载: 导出CSV

    表  4  金属自由界面速度测试

    Table  4.   Test of free surface velocities of metal

    Shot No.p2in/GPap2out/GPaη1/%
    0167.23045.67567.94
    67.23048.19371.68
    67.23039.55458.83
    67.23048.47572.10
    67.23049.18173.15
    67.23047.30470.04
    0267.23041.81762.20
    67.23045.49067.66
    67.23048.80472.59
    67.23051.64476.82
    下载: 导出CSV

    表  5  起跳间隔时间

    Table  5.   Interval between two accelerations

    Step thickness/mmInterval/μs
    1st test2nd test
    20.7600.559
    30.9000.882
    41.3351.300
    51.6251.629
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-07-27
  • 修回日期:  2019-08-30
  • 发布日期:  2019-11-25

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