RDX基含铝炸药三波点高度的数值模拟

段晓瑜 郭学永 聂建新 王秋实 焦清介

段晓瑜, 郭学永, 聂建新, 王秋实, 焦清介. RDX基含铝炸药三波点高度的数值模拟[J]. 高压物理学报, 2018, 32(3): 035101. doi: 10.11858/gywlxb.20170539
引用本文: 段晓瑜, 郭学永, 聂建新, 王秋实, 焦清介. RDX基含铝炸药三波点高度的数值模拟[J]. 高压物理学报, 2018, 32(3): 035101. doi: 10.11858/gywlxb.20170539
DUAN Xiaoyu, GUO Xueyong, NIE Jianxin, WANG Qiushi, JIAO Qingjie. Numerical Simulation of the Three-Wave Point of RDX-Based Aluminized Explosives[J]. Chinese Journal of High Pressure Physics, 2018, 32(3): 035101. doi: 10.11858/gywlxb.20170539
Citation: DUAN Xiaoyu, GUO Xueyong, NIE Jianxin, WANG Qiushi, JIAO Qingjie. Numerical Simulation of the Three-Wave Point of RDX-Based Aluminized Explosives[J]. Chinese Journal of High Pressure Physics, 2018, 32(3): 035101. doi: 10.11858/gywlxb.20170539

RDX基含铝炸药三波点高度的数值模拟

doi: 10.11858/gywlxb.20170539
详细信息
    作者简介:

    段晓瑜(1990-), 女, 博士, 主要从事含铝炸药爆炸作用研究.E-mail:dxy900401@163.com

    通讯作者:

    郭学永(1975—), 男,博士,副研究员,主要从事含能材料爆炸特性研究.E-mail:nust@bit.edu.cn

  • 中图分类号: O384

Numerical Simulation of the Three-Wave Point of RDX-Based Aluminized Explosives

  • 摘要: 为研究含铝炸药近地空中爆炸的三波点特性,利用ANSYS/AUTODYN显式有限元程序,对3种RDX基含铝炸药HL-01(RDXph)、HL-02(85% RDXph+15% Al)和HL-03(70% RDXph+30% Al)空中爆炸过程进行了模拟。结果表明:计算得到的压力时程曲线与实测压力时程曲线较吻合,且在不同位置处的超压值也接近实验值,说明所建立的模型及状态方程参数选取合理;与经验图表法的对比说明,基于爆热当量的经验图表法不适用于含铝炸药三波点高度的计算,而用数值模拟方法可以较好地获得含铝炸药的三波点高度;同一爆炸高度下,3种炸药的三波点高度由大到小依次为HL-03、HL-02、HL-01;对于同种炸药,三波点高度随着爆炸高度的减小而增加。

     

  • 图  传感器布置示意

    Figure  1.  Distribution of sensors

    图  计算模型

    Figure  2.  Simulation model

    图  HL-01的峰值超压-爆心距曲线

    Figure  3.  Overpressures of HL-01 vs.distance from blast center

    图  HL-02的冲击波超压-爆心距曲线

    Figure  4.  Overpressures of HL-02 vs.distance from blast center

    图  HL-03的冲击波超压-爆心距曲线

    Figure  5.  Overpressures of HL-03 vs.distance from blast center

    图  X=9 m处3种炸药的冲击波压力时程

    Figure  6.  Pressure histories of 3 explosives at X=9 m

    图  冲击波传播过程中压力变化云图

    Figure  7.  Pressure nephogram of shockwave propagation process

    图  TNT距离地面不同高度处爆炸的三波点位置

    Figure  8.  Height of three-wave point for TNT atdifferent blasting heights

    图  不同炸药三波点高度-爆心距曲线

    Figure  9.  Height of three-wave point vs. distancefrom blast center

    图  10  不同对比炸高下三波点高度-爆心距曲线

    Figure  10.  Height of three-wave point vs. distance fromblast center at different scaled blasting heights

    表  1  炸药JWL状态方程参数

    Table  1.   Parameters of JWL equation for explosives

    Explosive Density/
    (g·cm-3)
    A/
    GPa
    B/
    GPa
    R1 R2 ω E0/
    (1010J·m-3)
    DCJ/
    (km·s-1)
    pCJ/
    GPa
    HL-01 1.673 694.52 13.75 4.55 1.30 0.49 0.96 8.325 29.39
    HL-02 1.763 1 897.54 24.77 5.83 1.72 0.35 1.19 8.121 23.91
    HL-03 1.865 2 225.42 27.59 5.85 1.73 0.49 1.42 7.879 20.70
    下载: 导出CSV

    表  2  HL-01的三波点高度的模拟值与经验值

    Table  2.   Height of three-wave point for HL-01 gained by simulation and empirical chart

    X/m Height of three-wave point/m
    λH=0.40 m·kg-1/3 λH=0.44 m·kg-1/3 λH=0.60 m·kg-1/3
    2.5 0.68 0.38 0.34
    3.0 1.12 0.61 0.57
    3.5 1.71 0.84 0.81
    4.0 2.05 1.15 1.05
    4.5 2.74 1.72 1.37
    5.0 3.37 2.51 2.05
    5.5 4.15 3.11 2.51
    下载: 导出CSV

    表  3  HL-02的三波点高度的模拟值与经验值

    Table  3.   Height of three-wave point for HL-02 gained by simulation and empirical chart

    X/m Height of three-wave point/m Error between simulationand empirical values/%
    Simulation Empirical value
    2.5 0.66 0.95 43.89
    3.0 1.02 1.35 32.31
    3.5 1.46 1.80 23.25
    4.0 1.90 2.30 21.01
    4.5 2.54 2.80 10.20
    5.0 3.50 3.60 2.82
    5.5 4.21 4.30 2.11
    下载: 导出CSV

    表  4  冲击波在不同位置处的波速

    Table  4.   Shock velocity at differentdistances from blast center

    X/m Shock velocity/(m·s-1)
    HL-01 HL-02 HL-03
    3.5 1 008 1 139 1 345
    4.5 833 856 897
    5.5 606 643 706
    下载: 导出CSV
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  • 收稿日期:  2017-02-21
  • 修回日期:  2017-03-23

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