爆轰驱动下45钢半球壳膨胀断裂破片回收研究

张世文 陈艳 但加坤 李英雷 刘明涛 汤铁钢

张世文, 陈艳, 但加坤, 李英雷, 刘明涛, 汤铁钢. 爆轰驱动下45钢半球壳膨胀断裂破片回收研究[J]. 高压物理学报, 2023, 37(2): 025301. doi: 10.11858/gywlxb.20220665
引用本文: 张世文, 陈艳, 但加坤, 李英雷, 刘明涛, 汤铁钢. 爆轰驱动下45钢半球壳膨胀断裂破片回收研究[J]. 高压物理学报, 2023, 37(2): 025301. doi: 10.11858/gywlxb.20220665
ZHANG Shiwen, CHEN Yan, DAN Jiakun, LI Yinglei, LIU Mingtao, TANG Tiegang. Recovery of Expansion Fracture Fragments of a 45 Steel Hemispherical Shell Driven by Detonation[J]. Chinese Journal of High Pressure Physics, 2023, 37(2): 025301. doi: 10.11858/gywlxb.20220665
Citation: ZHANG Shiwen, CHEN Yan, DAN Jiakun, LI Yinglei, LIU Mingtao, TANG Tiegang. Recovery of Expansion Fracture Fragments of a 45 Steel Hemispherical Shell Driven by Detonation[J]. Chinese Journal of High Pressure Physics, 2023, 37(2): 025301. doi: 10.11858/gywlxb.20220665

爆轰驱动下45钢半球壳膨胀断裂破片回收研究

doi: 10.11858/gywlxb.20220665
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,副研究员,主要从事冲击动力学研究. E-mail:zhangswxueshu@163.com

    通讯作者:

    李英雷(1974-),男,博士,副研究员,主要从事冲击动力学研究. E-mail:ylli@caep.cn

  • 中图分类号: O347.3

Recovery of Expansion Fracture Fragments of a 45 Steel Hemispherical Shell Driven by Detonation

  • 摘要: 基于爆炸驱动金属半球壳产生的破片速度分布特点,设计了聚氨酯泡沫/水/聚氨酯泡沫3层介质组合的破片全回收系统。聚氨酯泡沫桶由侧壁与底部一次成型的3个泡沫桶组件拼接,结构紧凑,防水性能高。在泡沫桶底部盛水并增加一定厚度的漂浮泡沫板,加强了回收池底部防护。采用该泡沫桶开展了中心点起爆驱动45钢半球壳膨胀断裂的全回收实验。实验结果表明,破片回收率超过88%,破片内外表面辨识度高,绝大多数破片穿透泡沫桶侧壁和漂浮泡沫板并沉入水底。漂浮泡沫板和底部水层对破片速度的衰减效果明显,泡沫桶底部无破片侵彻。新设计的回收系统可回收接近2π立体角的飞散破片,表明该回收系统的适用范围涵盖了实验装置在起爆点单边的爆轰实验,拓展了该回收池可回收的破片种类。此外,新系统将竖直方向的组合衰减层总尺寸减至70 cm,为进一步优化和减小回收池尺寸提供了依据。根据破片测量数据,给出了破片质量分布结果,以及回收破片的平均厚度、平均尺寸等相关信息,并简要分析了半球壳破片与柱壳破片的特征差异,继而推算出半球壳断裂应变明显小于柱壳的断裂应变,为不同应力状态的壳层膨胀断裂机制研究提供了有益的实验数据支撑。

     

  • 图  半球壳实验装置(单位:mm)

    Figure  1.  Hemispherical shell experimental device (Unit: mm)

    图  计算模型

    Figure  2.  Numerical model

    图  半球壳和帽沿质点运动轨迹

    Figure  3.  Tracings of special points of hemispherical shell and bongrace

    图  半球壳破片回收池布局示意图(单位:mm)

    Figure  4.  Overall layout of hemispherical shell fragment recovery tank (Unit: mm)

    图  新设计的泡沫桶

    Figure  5.  New design of the foam barrel

    图  破片撞击不同介质组合的计算模型以及16 ms 时破片碰撞底板泡沫图像

    Figure  6.  Numerical model of flyer impacting on different media combinations and the result of deformation at 16 ms

    图  采用不同介质组合时钢破片速度衰减曲线

    Figure  7.  Velocity attenuation curves of steel flyer under different media combinations

    图  聚氨酯泡沫桶和回收池损伤情况

    Figure  8.  Damage of the polyurethane foam barrel and recovery tank

    图  典型回收破片的内表面(左)和外表面(右)形貌

    Figure  9.  Morphologies of the external (left) and internal (right) surface of typical recovered fragments

    图  10  半球壳回收的典型破片

    Figure  10.  Typical fragments recovered from a hemispherical shell

    图  11  破片质量-数目分布

    Figure  11.  Mass-number distribution of recovered fragments

    图  12  回收破片厚度-数目分布

    Figure  12.  Thickness-number distribution of recovered fragments

    图  13  破片平均尺寸分布

    Figure  13.  Average size distribution of recovered fragments

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出版历程
  • 收稿日期:  2022-09-28
  • 修回日期:  2022-10-28
  • 网络出版日期:  2023-04-05
  • 刊出日期:  2023-04-05

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