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

发布时间：2018-03-17 08:13

本文选题：兵器科学与技术　切入点：水下爆炸　出处：《兵工学报》2017年01期 　论文类型：期刊论文

【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%.
[Abstract]:In order to study the characteristics of the internal pressure of the flank tank under underwater contact explosion, in the time range of about 3 times of the first pulsating period of the bubble in underwater explosion, The interaction process of underwater explosion bubbles with lightning proof bulkhead and the characteristics of internal pressure load of the bulkhead are simulated and analyzed by using LS_DYNA software. The simulation results and analysis are verified by model tests. The results show that with the expansion or contraction of underwater explosion bubbles, the explosion product gas flows into or out of the sidescuttles from the outboard break. The outer plate also moves toward the inner sag or protruding outwards correspondingly, and the inner space of the bulwark cabin is separated into two regions by the outer board petals, and the internal pressure load of the outboard cabin has different characteristics at the front of the petals and the back of the petals. When the finite element method is used to evaluate the maximum damage of the outboard, the calculation time can be taken to be 5 times of the first pulsation period of the bubble.
【作者单位】：海军工程大学舰船工程系;海军91832部队装备部;
【基金】：国家自然科学基金项目(51479204;51409253;51679246)
【分类号】：O383.1

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