水下爆炸载荷下舰船双层底部结构的毁伤特性

陈岩武; 孙远翔; 王成

doi:10.12382/bgxb.2022.0390

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水下爆炸载荷下舰船双层底部结构的毁伤特性

更新时间：2025-08-18

- 水下爆炸载荷下舰船双层底部结构的毁伤特性
- Damage Characteristics of Ship’s Double Bottom Structure Subjected to Underwater Explosion
- 兵工学报 2023年44卷第3期页码：670-681
- 作者机构：
  
  北京理工大学爆炸科学与技术国家重点实验室，北京100081
- 作者简介：
  
  [ "陈岩武(1997—)，男，博士研究生，研究方向为水下爆炸载荷与结构毁伤。E-mail: chenyanwu1@126.com; " ]
  孙远翔(1967—)，男，副教授，硕士生导师，研究方向为水下爆炸载荷与结构毁伤。E-mail: sunyuanxiang002@126.com
  [ "王成(1972—)，男，教授，博士生导师，研究方向为高精度数值计算。E-mail: wangcheng@bit.edu.cn" ]
- 基金信息：
  
  国家自然科学基金专项项目(12141201);爆炸科学与技术国家重点实验室(北京理工大学)自主研究课题探索性项目(YBKT22-05);王宽诚德意志学术交流中心(DAAD)
- DOI：10.12382/bgxb.2022.0390
  中图分类号：
- 收稿：2022-05-16，
  
  纸质出版：2023-03-28
- 稿件说明：
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陈岩武, 孙远翔, 王成. 水下爆炸载荷下舰船双层底部结构的毁伤特性[J]. 兵工学报, 2023,44(3):670-681.

Yanwu CHEN, Yuanxiang SUN, Cheng WANG. Damage Characteristics of Ship’s Double Bottom Structure Subjected to Underwater Explosion[J]. Acta Armamentarii, 2023, 44(3): 670-681.
陈岩武, 孙远翔, 王成. 水下爆炸载荷下舰船双层底部结构的毁伤特性[J]. 兵工学报, 2023,44(3):670-681. DOI： 10.12382/bgxb.2022.0390.

Yanwu CHEN, Yuanxiang SUN, Cheng WANG. Damage Characteristics of Ship’s Double Bottom Structure Subjected to Underwater Explosion[J]. Acta Armamentarii, 2023, 44(3): 670-681. DOI： 10.12382/bgxb.2022.0390.

摘要

为研究舰船双层底部结构在水下爆炸载荷下的毁伤特性，进行电火花气泡与带破口双层结构模型相互作用实验，使用高速摄影机捕捉气泡在带破口双层结构下方的脉动特征，并使用LS-DYNA软件对该实验工况进行模拟，通过实验验证数值模型的有效性。在此基础上建立实尺度舰船双层底舱段有限元模型，通过改变爆距和双层板间水位，设置15个模拟工况，深入分析冲击波和气泡载荷对舰船双层底部结构的毁伤特性。研究结果表明：爆距较小时，外底板出现破口，内外底板之间的内气泡的膨胀作用加剧外底板破口的撕裂，同时使内底板出现塑性变形；爆距较大时，外底板仅发生变形，并与内底板接触，同时带动内底板的变形。双层板间水位较低时，冲击波载荷衰减较大，对内底板毁伤作用较小，此时内气泡的膨胀对内底板的变形起到主要作用；双层板间水位较高时，冲击波载荷衰减较小，冲击波和气泡脉动二次压力波载荷通过水介质共同作用到内底板，使内底板产生变形。

Abstract

To study the damage characteristics of a ship’s double bottom structure subjected to underwater explosion. Experiments on the interaction between the electric spark bubble and the ship’s double bottom structure with a hole are carried out. The pulsation characteristics of the bubble are captured by a high-speed camera

and the experiment is simulated by LS-DYNA to verify the effectiveness of the numerical model. Then

the finite element model of the full-scale cabin is established. By changing the explosion distance and water level between the double bottoms and designing 15 simulation scenarios

the damage characteristics of the double bottom structure subjected to shock wave and bubble loads are analyzed. The results show that: when the explosion distance is small

the outer bottom is broken

and the expansion of the "inner bubble" intensifies the tearing of the outer bottom and causes the plastic deformation of the inner bottom; when the explosion distance is large

the outer bottom only deforms and contacts with the inner bottom

driving the deformation of the inner bottom at the same time; when the water level between the two bottoms is low

the shock wave load attenuation is large with a small damage to the inner bottom

and the expansion of the "inner bubble" plays a major role in the deformation of the inner bottom; when the water level between the two bottoms is high

the shock wave load attenuation is small

the shock wave and bubble pulsation loads propagate through the water medium and act on the inner bottom

whose combined action causes its deformation.

关键词

Keywords

references

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