泡沫铝内衬对抗内部爆炸钢筒变形的影响

程帅 师莹菊 殷文骏 刘文祥 唐仕英 张德志

程帅, 师莹菊, 殷文骏, 刘文祥, 唐仕英, 张德志. 泡沫铝内衬对抗内部爆炸钢筒变形的影响[J]. 爆炸与冲击, 2020, 40(7): 071406. doi: 10.11883/bzycj-2019-0339
引用本文: 程帅, 师莹菊, 殷文骏, 刘文祥, 唐仕英, 张德志. 泡沫铝内衬对抗内部爆炸钢筒变形的影响[J]. 爆炸与冲击, 2020, 40(7): 071406. doi: 10.11883/bzycj-2019-0339
CHENG Shuai, SHI Yingju, YIN Wenjun, LIU Wenxiang, TANG Shiying, ZHANG Dezhi. Influence of aluminum foam lining on deformation of steel cylinders subjected to internal blast loading[J]. Explosion And Shock Waves, 2020, 40(7): 071406. doi: 10.11883/bzycj-2019-0339
Citation: CHENG Shuai, SHI Yingju, YIN Wenjun, LIU Wenxiang, TANG Shiying, ZHANG Dezhi. Influence of aluminum foam lining on deformation of steel cylinders subjected to internal blast loading[J]. Explosion And Shock Waves, 2020, 40(7): 071406. doi: 10.11883/bzycj-2019-0339

泡沫铝内衬对抗内部爆炸钢筒变形的影响

doi: 10.11883/bzycj-2019-0339
详细信息
    作者简介:

    程 帅(1988- ),男,博士研究生,助理研究员,chengshuai@nint.ac.cn

    通讯作者:

    张德志(1973- ),男,博士,研究员,zhangdezhi@nint.ac.cn

  • 中图分类号: O383.3

Influence of aluminum foam lining on deformation of steel cylinders subjected to internal blast loading

  • 摘要: 为提高承受内部爆炸载荷钢筒的抗爆性能,研究了泡沫铝内衬对钢筒变形的影响。首先通过对比实验,发现在本文的实验条件下,泡沫铝内衬导致钢筒变形增大,甚至发生了严重的破坏;进而建立有限元模型,研究了钢筒变形随爆炸当量、泡沫铝内衬厚度的变化机理和规律。结果表明,添加足够厚度的泡沫铝内衬能够减小钢筒变形,但泡沫铝厚度不足时,则可能起到相反的效果。对于固定尺寸的含泡沫铝内衬钢筒,随着爆炸当量增加,泡沫铝内衬对钢筒塑性变形的影响主要包含3种模式。模式1,泡沫铝可通过塑性变形吸收爆炸载荷,从而减小钢筒变形。模式2,泡沫铝内衬导致钢筒承受的载荷强度增大,钢筒塑性变形增大。模式3,泡沫铝对载荷强度的影响可忽略,泡沫铝通过增大结构质量减小钢筒塑性变形。
  • 图  1  实验装置示意图

    Figure  1.  Sketch of the experiment device

    图  2  实验用钢筒和泡沫铝内衬

    Figure  2.  The steel cylinder and aluminum foam lining used in the experiment

    图  3  泡沫铝静态应力应变曲线

    Figure  3.  Static stress-strain curve of aluminum foam

    图  4  钢筒破碎情况

    Figure  4.  The cracked steel cylinder

    图  5  用于数值模拟的二维轴对称模型

    Figure  5.  The two-dimensional axisymmetric model used in numerical simulation

    图  6  计算结果与实验数据的对比

    Figure  6.  Comparison of simulated and experimental results

    图  7  泡沫铝内衬对钢筒内壁载荷历程的影响(10 g TNT)

    Figure  7.  Influences of aluminum foam linings on the pressure loading on the inner surfaces of steel cylinders (10 g TNT)

    图  8  泡沫铝内衬对钢筒外壁弹性径向膨胀的影响

    Figure  8.  Influences of aluminum foam linings on the elastic radial expansion of the outer walls of steel cylinders

    图  9  泡沫铝内衬对钢筒塑性变形的影响

    Figure  9.  Influences of aluminum foam linings on plastic deformation of steel cylinders

    图  10  泡沫铝内衬对钢筒内壁载荷历程的影响

    Figure  10.  Influences of aluminum foam linings on pressure loading on the inner surfaces of steel cylinders

    表  1  实验设置和钢筒外表面的变形情况

    Table  1.   The experimental setup and deformation of the outer surfaces of the steel cylinders

    实验编号炸药质量/g厚度/mm钢筒径向膨胀/mm钢筒残余应变/%
    钢筒泡沫铝实验模拟实验模拟
    1 10 6 00.130.1700
    2 10 6100.150.1900
    318312 05.30 5.408.48.6
    418312 57.80 7.2012.411.1
    51801215破裂13.0019.6
    下载: 导出CSV

    表  2  TNT炸药的JWL状态方程参数

    Table  2.   Parameters in the JWL equation of state for TNT explosive

    ρ0/(kg∙m−3)e0/(J∙kg−1)D/(m∙s−1)pCJ/GPaA/GPaB/GPaR1R2$\omega '$
    1 6304.26×106693021371.23.2314.150.950.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-09-03
  • 修回日期:  2020-05-13
  • 刊出日期:  2020-07-01

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