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爆炸加载下金属柱壳破片软回收技术研究

张世文 李英雷 陈艳 但加坤 郭昭亮 刘明涛

2021-03期封面[J]. 爆炸与冲击, 2021, 41(3): .
引用本文: 张世文, 李英雷, 陈艳, 但加坤, 郭昭亮, 刘明涛. 爆炸加载下金属柱壳破片软回收技术研究[J]. 爆炸与冲击, 2021, 41(11): 114102. doi: 10.11883/bzycj-2020-0449
cover[J]. Explosion And Shock Waves, 2021, 41(3): .
Citation: ZHANG Shiwen, LI Yinglei, CHEN yan, DAN Jiakun, GUO Zhaoliang, LIU Mingtao. Investigation on the technology of soft recovery of fragment produced by metal cylindrical shell subjected to explosive loading[J]. Explosion And Shock Waves, 2021, 41(11): 114102. doi: 10.11883/bzycj-2020-0449

爆炸加载下金属柱壳破片软回收技术研究

doi: 10.11883/bzycj-2020-0449
基金项目: 国家自然科学基金(11932018,12072332)
详细信息
    作者简介:

    张世文(1971- ),男,博士,研究员,zhangswxueshu@163.com

    通讯作者:

    陈 艳(1993- ),女,硕士,研究实习员,1028702777@qq.com

  • 中图分类号: O347.3

Investigation on the technology of soft recovery of fragment produced by metal cylindrical shell subjected to explosive loading

  • 摘要: 针对爆炸加载下金属柱壳膨胀断裂破片软回收的研究需求,本文通过理论分析和初步的数值模拟设计了由低密度聚氨酯泡沫与水介质为主体的回收装置。与传统单一材料为主的回收装置相比,该回收装置既能在破片高速阶段将低阻抗聚氨酯泡沫对破片的冲击压力减小到约为水对破片冲击压力的1/3,又使破片速度全程持续地较大幅度衰减,还能在破片低速阶段又能充分利用水介质密度大的优势,减小以聚氨酯泡沫单一材料为主的回收装置尺寸。依托该装置开展了炸药加载下304不锈钢柱壳膨胀断裂回收实验。通过测量回收池外壁速度、检查实验后的回收池外观,发现回收池池壁和底部完好,可以重复使用;通过对回收破片称重统计,破片回收率超过85%,破片内外界面辨识度高,破片表面车刀纹清晰可见,内部可见多条未贯穿的裂纹。表明该回收装置对破片的冲击损伤显著降低。根据破片断口和表面信息,推测了破片在金属柱壳的大致位置。本文最后初步给出了回收破片的平均厚度及质量分布等相关信息的统计结果。
  • 图  1  回收池整体布局示意图(单位:mm)

    Figure  1.  Overall layout of recovery tank (unit: mm)

    图  2  破片撞击不同介质组合的计算模型

    Figure  2.  Simulation model of flyer impacting on different media combinations

    图  3  钢破片速度衰减与不同介质组合中穿透深度关系曲线

    Figure  3.  Relation curves between speed attenuation of steel flyer and penetration depth in different media combinations

    图  4  聚氨酯泡沫桶

    Figure  4.  Polyurethane foam tank

    图  5  实验装置放入聚氨酯泡沫桶

    Figure  5.  Experimental device is put into polyurethane foam tank

    图  6  四个测点速度曲线

    Figure  6.  Velocities of four measuring points

    图  7  3号测点速度位移时间曲线

    Figure  7.  Velocity displacement-time curves of measuring point 3

    图  8  回收池侧壁和底部状态

    Figure  8.  Status of wall and bottom of recovery tank

    图  9  回收破片形貌1

    Figure  9.  Morphology of recovered fragments 1

    图  10  回收破片形貌2

    Figure  10.  Morphology of recovered fragments 2

    图  11  不同类型的回收破片

    Figure  11.  Different types of recovered fragments

    图  12  回收破片质量、厚度和内外界面宽度统计

    Figure  12.  Statistics of mass, thickness and inner and outer interface width of recovered fragments

    图  13  不同形状破片在金属壳体的位置

    Figure  13.  Position of fragments with different shapes in metal cylindrical shell

    表  1  不同材料的冲击雨贡纽参数

    Table  1.   Shock Hugoniot parameters of different materials

    材料ρ/(g·cm−3c0/(km·s−1λ
    [16]1.01.481.75
    石蜡[16]0.9182.9081.56
    聚氨酯泡沫[17]0.3210.71.13
    0.160.321.15
    泡沫碳[17]0.480.261.18
    0.560.361.22
    聚苯乙烯泡沫[17]0.2−0.005*1.245
    0.15−0.005*1.414
    0.1有实验,无拟合值
     注: *数据可靠性存疑。
    下载: 导出CSV

    表  2  水、石蜡等软材料对不同速度不锈钢破片产生的冲击压力

    Table  2.   Impact pressure of water, paraffin and other soft materials on stainless steel fragments

    材料ρ/(g·cm−3冲击压力/GPa
    v=1.8 km/sv=2.0 km/s
    石蜡0.9186.767.74
    1.05.216.09
    泡沫碳0.481.692.05
    聚氨酯泡沫Ⅰ0.160.600.73
    聚氨酯泡沫Ⅱ0.3211.391.66
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-12-04
  • 修回日期:  2021-07-05
  • 网络出版日期:  2021-11-08
  • 刊出日期:  2021-11-23

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