噪声与振动控制

噪声与振动控制 ›› 2012, Vol. 32 ›› Issue (6): 111-115.DOI: 10.3969/j.issn.1006-1335.2012.06.027

• 2.振动理论与数值解法 • 上一篇    下一篇

水下爆炸气泡对内加筋圆柱壳结构毁伤机理分析

汪 浩，王先洲，刘 均，程远胜   

  1. （ 华中科技大学  船舶与海洋工程学院，  武汉  430074 ）
  • 收稿日期:2012-06-12 修回日期:2012-09-10 出版日期:2012-12-18 发布日期:2012-12-18
  • 通讯作者: 汪浩

Damage Mechanism Analysis of Inner-stiffened Cylindrical Shell Subjected to Underwater Explosion Bubble

WANG Hao,WANG  Xian-zhou,  LIU Jun,CHENG  Yuan-sheng   

  1. ( School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,  Wuhan  430074,  China )
  • Received:2012-06-12 Revised:2012-09-10 Online:2012-12-18 Published:2012-12-18

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摘要： 以内加筋圆柱壳为研究对象，对近距离非接触爆炸作用下气泡的脉动载荷以及气泡溃破高速射流对内加筋圆柱壳结构的毁伤机理进行计算分析，并且探讨结构参数、药包位置等相关物理量对结构变形特征与毁伤模式的影响。研究结果表明，水下爆炸气泡膨胀产生的膨胀脉动冲击造成结构的整体变形，另一方面气泡溃破所造成的高速射流(速度 > 100 m/s)则会对局部区域造成严重破坏，弹塑性边界以及自由液面效应会对气泡的形状产生显著的影响。

关键词: 冲击, 内加筋圆柱壳, 水下爆炸气泡, 射流, 毁伤

Abstract: The damage mechanism of inner-stiffened cylindrical shell subjected to pulsation and collapse-jet loads from underwater explosion bubbles was analyzed, and the influences of some physical quantities, such as structural parameters, location of satchel charges etc., on the structural deformation characteristics and damage mode were investigated. The research results show that the global structural deformation are mainly caused by the UNDEX bubble expansion impact, and the high speed bubble collapse jet (velocity>100m/s) can cause serious local damage of the structure. Analyses also indicate that the elastic-plastic boundary effect and the free surface effect have significant influence on the shape of the UNDEX bubble.

Key words: shock , inner-stiffened cylindrical shell , underwater explosion bubble , jet, damage

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