水下接触爆炸下防雷舱舷侧空舱的内压载荷特性仿真研究

doi:10.3969/j.issn.1000-1093.2017.01.019

兵工学报 ›› 2017, Vol. 38 ›› Issue (1): 143-150.doi: 10.3969/j.issn.1000-1093.2017.01.019

水下接触爆炸下防雷舱舷侧空舱的内压载荷特性仿真研究

吴林杰¹，侯海量¹，朱锡¹，陈鹏宇¹，阚于龙²

(1.海军工程大学舰船工程系，湖北武汉 430033；2.海军91832部队装备部, 广西北海 536000)

收稿日期:2016-03-07 修回日期:2016-03-07 上线日期:2017-03-03
作者简介:吴林杰(1987—)，男，博士研究生。E-mail:wulinjie102@163.com
基金资助:
国家自然科学基金项目(51479204、51409253、51679246)

Numerical Simulation on Inside Load Characteristics of Broadside Cabin of Defensive Structure Subjected to Underwater Contact Explosion

WU Lin-jie¹, HOU Hai-liang¹, ZHU Xi¹, CHEN Peng-yu¹, KAN Yu-long²

(1.Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China; 2.Equipment Department, Unit 91832 of Naval, Beihai 536000, Guangxi, China)

Received:2016-03-07 Revised:2016-03-07 Online:2017-03-03

摘要/Abstract

摘要： 为研究水下接触爆炸下防雷舱舷侧空舱的内压载荷特性，在水下爆炸气泡第1次脉动周期的约3倍时间范围内，利用LS_DYNA软件对水下爆炸气泡与防雷舱舷侧空舱的相互作用过程和舷侧空舱的内压载荷特性进行了仿真分析，并通过模型试验对仿真结果及分析进行了验证。研究结果表明：伴随着水下爆炸气泡膨胀或收缩，爆炸产物气体从外板破口处流入或流出舷侧空舱，外板也相应地向里凹陷或向外凸出运动；舷侧空舱内部空间被外板花瓣隔成两个区域，舷侧空舱的内压载荷在花瓣前面和花瓣背面具有不同特性；采用有限元方法评估舷侧空舱外板的最大破坏程度时，可将计算时间取为气泡第1次脉动周期的5%.

关键词: 兵器科学与技术, 水下爆炸, 防护结构, 载荷特性, 气泡, 仿真

Abstract: The inside load characteristics of broadside cabin of defensive structure subjected to underwater contact explosion is researched. The interaction between underwater explosion bubble and broadside empty cabin at the time when is three fold of the first pulsation period of underwater explosion bubble and the inside load characteristics of broadside empty cabin are numerically analyzed by using LS_DYNA software. The model experiment is performed to validate the creditability of simulation results and analysis. The research shows that the blast gas flows into or out the broadside empty cabin from the plate crevasss along with bubble expansion or contraction, and the broadside plate is sunken or upheaved at the same time. The broadside empty cabin is separated by plate petals into two regions, and the load in the front of plate petals is different from that in the back of plate petals. If the largest plate damage is evaluated by using finite element method, the calculation time could be just 5% of the first pulsation period of underwater explosion bubble.Key

Key words: ordnancescienceandtechnology, underwaterexplosion, defensivestructure, loadcharacteristics, bubble, numericalsimulation

中图分类号:

O383⁺.1

吴林杰，侯海量，朱锡，陈鹏宇，阚于龙. 水下接触爆炸下防雷舱舷侧空舱的内压载荷特性仿真研究[J]. 兵工学报, 2017, 38(1): 143-150.

WU Lin-jie, HOU Hai-liang, ZHU Xi, CHEN Peng-yu, KAN Yu-long. Numerical Simulation on Inside Load Characteristics of Broadside Cabin of Defensive Structure Subjected to Underwater Contact Explosion[J]. Acta Armamentarii, 2017, 38(1): 143-150.

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水下接触爆炸下防雷舱舷侧空舱的内压载荷特性仿真研究

Numerical Simulation on Inside Load Characteristics of Broadside Cabin of Defensive Structure Subjected to Underwater Contact Explosion

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