Scholarlink

<p>Studying the damage effects of multi-cabin structures (MCS) subjected to underwater explosions holds immense significance for ship protection. Employing a combined experimental and numerical simulation approach, this paper comprehensively investigates the damage effects of MCS under near-field underwater explosion. Three distinct damage modes are defined. Damage results of MCS caused by a single explosive and simultaneous detonation of two explosives with equivalent total mass are analyzed. A damage factor designated <i>F</i>* is proposed for determining the MCS damage mode under simultaneous dual-explosive detonation. The three different damage modes of MCS are as follows: I) Plastic deformation of the outermost layer; II) Tearing failure of the outermost layer accompanied by significant deformation of the second layer; III) Tearing failure of both the outermost and second layers. Once a breach occurs in the first layer, a water jet penetrates into the cabin and strikes the second layer, causing secondary damage. Additionally, the fragments generated from the first layer colliding with the second layer are the primary factors contributing to the occurrence of Mode III. The study presents criteria for distinguishing these three damage modes based on different shock wave impact locations. When damage factor <i>F</i>* ⩾ 1, MCS experiences damage in Mode II; whereas when <i>F</i>* &lt; 1, MCS undergoes damage in Mode I. <i>F</i>* achieves 96.5% accuracy in damage mode prediction for MCS under 250 g-1 080 g TNT charges. When the total mass of explosives remains constant, the simultaneous explosion of two explosives exerts a more pronounced damage effect on MCS than a single explosive.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Damage Effect of a Multi-cabin Structure Under Near-field Underwater Explosion

  • 期刊论文

  • 发表日期：

    2025年7月19日

查看全文
  • Shangjian Lin,
  • Jinxiang Wang,
  • Lingquan Kong,
  • Jian Wang,
  • Kui Tang,
  • Yuanbo Li,
  • Yunkun Hou

摘要

Studying the damage effects of multi-cabin structures (MCS) subjected to underwater explosions holds immense significance for ship protection. Employing a combined experimental and numerical simulation approach, this paper comprehensively investigates the damage effects of MCS under near-field underwater explosion. Three distinct damage modes are defined. Damage results of MCS caused by a single explosive and simultaneous detonation of two explosives with equivalent total mass are analyzed. A damage factor designated F* is proposed for determining the MCS damage mode under simultaneous dual-explosive detonation. The three different damage modes of MCS are as follows: I) Plastic deformation of the outermost layer; II) Tearing failure of the outermost layer accompanied by significant deformation of the second layer; III) Tearing failure of both the outermost and second layers. Once a breach occurs in the first layer, a water jet penetrates into the cabin and strikes the second layer, causing secondary damage. Additionally, the fragments generated from the first layer colliding with the second layer are the primary factors contributing to the occurrence of Mode III. The study presents criteria for distinguishing these three damage modes based on different shock wave impact locations. When damage factor F* ⩾ 1, MCS experiences damage in Mode II; whereas when F* < 1, MCS undergoes damage in Mode I. F* achieves 96.5% accuracy in damage mode prediction for MCS under 250 g-1 080 g TNT charges. When the total mass of explosives remains constant, the simultaneous explosion of two explosives exerts a more pronounced damage effect on MCS than a single explosive.