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A numerical study of whole ship structural damage resulting from close-in underwater explosion shock

机译：近距离水下爆炸冲击对整船结构破坏的数值研究

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摘要

There are quite a few researches on far-field underwater explosion and contact underwater explosion. However, few studied the close-in non-contact underwater explosion. In this paper the numerical simulations on the deformation and rupture of a rectangular plate and a stiffened plate are conducted, respectively. The simulation results are close to the failure modes shown in the tests. The limit of acoustic-structure coupling method is also pointed out. Then a full-scale surface ship subjected to underwater shock is presented using the same method. The damage evolution process is studied and three damage modes of the whole ship are specified according to the standoff distance. All of these results can be reference to the research of close-in non-contact underwater explosion.
机译：关于远场水下爆炸和接触水下爆炸的研究很多。但是，很少有人研究近距离非接触式水下爆炸。本文分别对矩形板和加劲板的变形和破裂进行了数值模拟。仿真结果接近测试中显示的故障模式。指出了声固耦合方法的局限性。然后，使用相同的方法提出了遭受水下冲击的全尺寸水面舰船。研究了损伤演化过程，并根据对峙距离确定了全船的三种损伤模式。所有这些结果可为近距离非接触式水下爆炸研究提供参考。

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  • 来源
    《Marine Structures》 |2013年第4期|24-43|共20页
  • 作者

    Zhi Zong; Yanjie Zhao; Haitao Li;

  • 作者单位

    School of Naval Architecture Engineering, Faculty of Vehicle Engineering and Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian U6024,PR China;

    School of Naval Architecture Engineering, Faculty of Vehicle Engineering and Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian U6024,PR China;

    School of Naval Architecture Engineering, Faculty of Vehicle Engineering and Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian U6024,PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    close-in underwater explosion; numerical simulation; structural damage; whole ship; damage mode;

    机译：近距离水下爆炸;数值模拟结构损坏;全船破坏模式;

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