多次水下爆炸中船体梁的累积毁伤效应

唐正鹏 李翔宇 郑监

唐正鹏, 李翔宇, 郑监. 多次水下爆炸中船体梁的累积毁伤效应[J]. 高压物理学报, 2022, 36(2): 025102. doi: 10.11858/gywlxb.20210809
引用本文: 唐正鹏, 李翔宇, 郑监. 多次水下爆炸中船体梁的累积毁伤效应[J]. 高压物理学报, 2022, 36(2): 025102. doi: 10.11858/gywlxb.20210809
TANG Zhengpeng, LI Xiangyu, ZHENG Jian. Cumulative Damage Effect of Hull Girder Subjected to Multiple Underwater Explosions[J]. Chinese Journal of High Pressure Physics, 2022, 36(2): 025102. doi: 10.11858/gywlxb.20210809
Citation: TANG Zhengpeng, LI Xiangyu, ZHENG Jian. Cumulative Damage Effect of Hull Girder Subjected to Multiple Underwater Explosions[J]. Chinese Journal of High Pressure Physics, 2022, 36(2): 025102. doi: 10.11858/gywlxb.20210809

多次水下爆炸中船体梁的累积毁伤效应

doi: 10.11858/gywlxb.20210809
基金项目: 国家自然科学基金(11872376)
详细信息
    作者简介:

    唐正鹏(1993- ),男,硕士研究生,主要从事爆炸力学研究. E-mail:tangzhengpeng14@163.com

    通讯作者:

    李翔宇(1980- ),男,博士,教授,主要从事爆炸力学研究. E-mail:xiangyulee@nudt.edu.cn

  • 中图分类号: O383; U661.7

Cumulative Damage Effect of Hull Girder Subjected to Multiple Underwater Explosions

  • 摘要: 针对在多次水下爆炸中船体梁的累积毁伤问题,采用 AUTODYN软件与试验相结合的方法,分析了炸药当量、爆距、爆炸次数等因素对船体梁累积毁伤效应的影响。结果表明:在水下爆炸加载作用下,船体梁会发生中部凹陷局部塑性变形和整体中拱塑性弯曲变形。在一定冲击因子作用下,其挠度与水下爆炸加载次数呈线性关系,且药量越大,挠度越大。爆距相同时,同等当量炸药对船体梁进行单次和均分连续3次水下爆炸加载,其最终塑性变形挠度不同,均分连续3次爆炸作用下船体梁的塑性变形挠度更小。

     

  • 图  试验布局和船体梁模型

    Figure  1.  Test arrangement and hull girder model

    图  黑索金药柱

    Figure  2.  RDX cylindrical explosive charge

    图  水中气泡脉动过程

    Figure  3.  Underwater bubble pulsation process

    图  第2次水下爆炸后船体梁底部

    Figure  4.  Bottom of hull girder after the second underwater explosion

    图  第3次水下爆炸后船体梁变形

    Figure  5.  Deformation of hull girder after the third underwater explosion

    图  一维楔形模型的压力云图

    Figure  6.  Pressure nephogram of one-dimensional wedge model

    图  船体梁有限元模型

    Figure  7.  Finite element model of hull girder

    图  100 mm爆距有限元计算模型

    Figure  8.  Finite element model for the calculation case with 100 mm stand-off distance

    图  船体梁变形数值模拟结果

    Figure  9.  Numerical simulation results of hull girder deformation

    图  10  船体梁变形的试验与数值模拟结果对比

    Figure  10.  Comparison of deformation of hull girder between test and simulation results

    图  11  多次爆炸加载后累积挠度值

    Figure  11.  Cumulative deflection values after multiple explosive loading

    表  1  试验工况

    Table  1.   Test conditions

    No.W/gH/mmTimes
    12.953001
    22.962002
    33.001003
    下载: 导出CSV

    表  2  各工况计算参数

    Table  2.   Parameters in different calculation cases

    No.W/gH/mmQ/(g1/3·m−1)Rmax/mmn
    1110010.01545
    2820010.03095
    327 30010.04605
    4310014.42205
    510 15014.43305
    624 20014.44455
    7810020.03103
    827 15020.04643
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-06-09
  • 修回日期:  2021-06-28
  • 录用日期:  2021-07-01

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