内部爆炸薄圆板的变形及有效载荷

李芝绒 张玉磊 袁建飞 王胜强

李芝绒, 张玉磊, 袁建飞, 王胜强. 内部爆炸薄圆板的变形及有效载荷[J]. 爆炸与冲击, 2020, 40(11): 113101. doi: 10.11883/bzycj-2020-0045
引用本文: 李芝绒, 张玉磊, 袁建飞, 王胜强. 内部爆炸薄圆板的变形及有效载荷[J]. 爆炸与冲击, 2020, 40(11): 113101. doi: 10.11883/bzycj-2020-0045
LI Zhirong, ZHANG Yulei, YUAN Jianfei, WANG Shengqiang. Deformation and payload of thin circular plates subjected to internal explosion[J]. Explosion And Shock Waves, 2020, 40(11): 113101. doi: 10.11883/bzycj-2020-0045
Citation: LI Zhirong, ZHANG Yulei, YUAN Jianfei, WANG Shengqiang. Deformation and payload of thin circular plates subjected to internal explosion[J]. Explosion And Shock Waves, 2020, 40(11): 113101. doi: 10.11883/bzycj-2020-0045

内部爆炸薄圆板的变形及有效载荷

doi: 10.11883/bzycj-2020-0045
详细信息
    作者简介:

    李芝绒(1968- ),女,研究员,lzr204@163.com

    通讯作者:

    张玉磊(1987- ),男,硕士,副研究员,kaka-zyl@163.com

  • 中图分类号: O383.5

Deformation and payload of thin circular plates subjected to internal explosion

  • 摘要: 为了研究内爆炸薄圆板的失效与作用载荷特性,在双圆筒装置内开展了铝质、钢质薄圆板内爆炸实验,分析了圆板破坏模式及比冲量载荷特性,并基于相同变形下载荷相等原理,得到了钢质圆板极限变形下的有效比冲量及作用时间,提出了该工况下圆板变形的预估模型。结果表明:在内爆炸载荷作用下,薄圆板的夹持边界和几何中心是应力集中区,产生了塑性大变形、拉伸撕裂、剪切断裂3种破坏模式;圆板的比冲量载荷由初始的波浪式增长逐渐转化为线性增长,30~80 g某温压装药使1 mm厚钢质圆板产生极限变形的有效比冲量作用时间在2.26~2.93 ms之间,经验证,圆钢板变形预估模型得到的装药质量与实验装药质量偏差小于13.3%。
  • 图  1  双圆筒爆炸装置及测点布设位置

    Figure  1.  Double cylinder explosive device and locations of measuring points

    图  2  典型铝质、钢质薄板实验后状态

    Figure  2.  Pictures of typical aluminum and steel thin circular plates after experiments

    图  3  工况7的4个测点压力载荷曲线和比冲量曲线

    Figure  3.  Pressure load curves and specific impulse curves of four measuring points under condition 7

    图  4  各实验工况圆板中心的压力载荷曲线

    Figure  4.  Pressure load curves of circular plates under various experimental conditions

    图  5  各实验工况圆板中心比冲量曲线

    Figure  5.  Specific impulse curves of circular plates under various experimental conditions

    表  1  各实验工况圆板的变形结果

    Table  1.   Deformation results of circular plate under various experimental conditions

    实验工况平板材质平板厚度/mm装药类型装药质量/g圆板挠度/mm变形破坏结果
    12TNT20 71.5夹持边、中心塑性大变形
    22TNT40夹持边被切断
    32WY20 93.0夹持边间断性裂缝
    41TNT40 85.5夹持边、中心塑性大变形
    51WY30 86.0夹持边、中心塑性大变形
    61WY40100.5夹持边、中心塑性大变形
    71WY50111.0夹持边、中心塑性大变形
    81WY60122.0夹持边、中心塑性大变形
    91WY70134.0夹持边、中心塑性大变形
    101WY80147.0夹持边、中心塑性大变形
    下载: 导出CSV

    表  2  工况5~10的 p和Δi及典型时刻模型比冲量的计算值和实验值

    Table  2.   p and Δi of conditions 5−10 and the calculated and experimental specific impulses at typical times

    实验
    工况
    压力/
    MPa
    比冲量快速增长量/
    (MPa·ms)
    3 ms 时的比冲量/(MPa·ms)5 ms 时的比冲量/(MPa·ms)10 ms 时的比冲量/(MPa·ms)
    计算值实验值计算值实验值计算值实验值
    50.1990.2900.8610.7581.2361.2642.1722.217
    60.2350.3321.0560.9701.5121.4092.6532.568
    70.2940.3931.2371.2001.7691.7013.0973.244
    80.3220.4711.4081.2892.0101.8563.5153.520
    90.3420.5181.5711.4242.2402.1233.9123.927
    100.3770.5661.7271.6482.4602.4464.2914.342
    下载: 导出CSV

    表  3  工况5~10钢质圆板的有效冲量和有效比冲量

    Table  3.   Effective impulses and effective specific impulses of steel circular plates under conditions 5−10

    实验工况圆板挠度$/{\rm{m} }{\rm{m} }$有效冲量$/({\rm{N} }\cdot {\rm{s} } )$有效比冲量$/({\rm{MP} }{\rm{a} }\cdot {\rm{ms} } )$修正有效冲量$/({\rm{N} }\cdot {\rm{s} })$修正有效比冲量$/({\rm{MP} }{\rm{a} }\cdot {\rm{ms} })$作用时间$/{\rm{m} }{\rm{s} }$
    5 86.03440.656389 0.7772.93
    6100.54020.7674560.9122.76
    7111.04440.8475051.0092.55
    8122.0476 0.9085421.0842.43
    9134.05361.0236121.2242.36
    10147.05881.1226731.3452.26
    下载: 导出CSV
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  • 收稿日期:  2020-02-26
  • 修回日期:  2020-06-29
  • 刊出日期:  2020-11-05

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