底部近距离爆炸下舱段模型毁伤试验研究

伍星星 汪俊 刘建湖 刘国振 王海坤

伍星星, 汪俊, 刘建湖, 刘国振, 王海坤. 底部近距离爆炸下舱段模型毁伤试验研究[J]. 爆炸与冲击, 2020, 40(11): 111406. doi: 10.11883/bzycj-2020-0067
引用本文: 伍星星, 汪俊, 刘建湖, 刘国振, 王海坤. 底部近距离爆炸下舱段模型毁伤试验研究[J]. 爆炸与冲击, 2020, 40(11): 111406. doi: 10.11883/bzycj-2020-0067
WU Xingxing, WANG Jun, LIU Jianhu, LIU Guozhen, WANG Haikun. Damaging characteristics of a cabin model under close-in underwater explosion from bottom attacting[J]. Explosion And Shock Waves, 2020, 40(11): 111406. doi: 10.11883/bzycj-2020-0067
Citation: WU Xingxing, WANG Jun, LIU Jianhu, LIU Guozhen, WANG Haikun. Damaging characteristics of a cabin model under close-in underwater explosion from bottom attacting[J]. Explosion And Shock Waves, 2020, 40(11): 111406. doi: 10.11883/bzycj-2020-0067

底部近距离爆炸下舱段模型毁伤试验研究

doi: 10.11883/bzycj-2020-0067
基金项目: 国防基础科研重点项目(B0820132045);国家重点安全基础研究(613279)
详细信息
    作者简介:

    伍星星(1989- ),男,硕士,工程师,xingxingwupy@163.com

  • 中图分类号: O383

Damaging characteristics of a cabin model under close-in underwater explosion from bottom attacting

  • 摘要: 底部近距离爆炸可对水面舰船造成致命性打击,为探究其破坏机理,本文中开展了底部近距离爆炸下舱段模型的毁伤试验,获取了舱段模型破损区域试验数据、非破损区域的冲击环境数据。同时借助舷侧近距离爆炸试验结果、底部中远场爆炸试验结果,综合对比可发现:(1)底部近距离爆炸下,舱段模型会呈现整体隆起变形、爆心区域撕裂并伴有较大凹陷变形、舷侧外板大面积屈曲失稳等典型特征;(2)相比舷侧爆炸方位,底部爆炸对舱段模型具有很强的综合毁伤效果,底部爆炸相对舷侧爆炸对舱段模型的综合毁伤效果可提高40%以上;(3)在冲击环境方面,底部近距离爆炸下非破损区域测点中高频段的冲击谱曲线变化趋势基本与中远场爆炸一致,但在低频阶段,底部近距离爆炸下的谱位移要远高于中远场爆炸工况。
  • 图  1  模型结构示意图

    Figure  1.  The whole structure of the cabin model

    图  2  模型内部结构示意图

    Figure  2.  The inner structure of the cabin model

    图  3  Q345B钢不同应变率下的应力应变曲线

    Figure  3.  Stress-strain curves of Q345B at different strain rates

    图  4  舱段模型中加速度、中频振子测点布置示意图

    Figure  4.  Layout of measuring points for acceleration, intermediate frequency oscillator

    图  5  药包布置位置

    Figure  5.  The charge positions

    图  6  底部近距离爆炸后舱段模型整体毁伤结果

    Figure  6.  The damage result of the cabin model after bottom close-in underwater explosion

    图  7  底部破口形状结果

    Figure  7.  The shape of the bottom crevasse

    图  8  内底板破坏变形结果

    Figure  8.  The damage results of inner bottom plates

    图  9  甲板2毁伤破坏结果

    Figure  9.  The damage results diagram of deck 2

    图  10  甲板1毁伤破坏结果

    Figure  10.  The damage results of deck 1

    图  11  典型测点加速度、速度、位移曲线

    Figure  11.  The acceleration, velocity, displacement history time curves of typical points

    图  12  中频振子修正下的测点冲击谱

    Figure  12.  The diagram of shock spectrum with intermediate frequency oscillator correcting

    图  13  典型测点处冲击谱变化规律

    Figure  13.  The diagram of typical point shock spectrum tendency

    图  14  测点冲击谱

    Figure  14.  Shock spectra at typical measuring points

    图  15  舷侧近距离爆炸下舱段模型毁伤结果

    Figure  15.  The cabin model damage after shipboard close-in underwater explosion

    图  16  舷侧爆炸、底部爆炸后剩余强度对比

    Figure  16.  Residual ultimate strength contrasting between broadside and bottom explosions

    表  1  试验工况表

    Table  1.   Experimental cases

    工况爆炸方位药量/kg爆距/m爆点位置备注
    1底部2.00.18垂向水线下方1.18 m,横向位于船舯主要试验
    2底部1.06.66垂向水线下方7.66 m,横向位于船舯冲击环境对比试验(冲击因子0.15、0.25)
    3底部1.04.00垂向水线下方5.0 m,横向位于船舯
    4舷侧2.80.18垂向水线下方0.44 m,横向距离舷侧0.125 m毁伤对比试验
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-03-17
  • 修回日期:  2020-06-10
  • 刊出日期:  2020-11-05

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