水下接触爆炸下夹芯式防雷舱抗爆效能研究  

Anti-knock efficiency of sandwich defensive structures subjected to underwater contact explosion

作　　者：侯海量[1] 王克 柴崧淋 李典[1] 赵著杰 HOU Hai-liang;WANG Ke;CHAI Song-lin;LI Dian;ZHAO Zhu-jie(Department of Naval Architecture Engineering,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船与海洋学院,武汉430033

出　　处：《船舶力学》2023年第10期1550-1561,共12页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(52271338,51979277)。

摘　　要：为进一步提高防雷舱的水下防护能力,将夹芯结构应用于防雷舱。采用有限元数值模拟方法,从防雷舱主要舱壁板典型时刻载荷承载特性及各部分结构吸能特性两方面对夹芯式防雷舱在水下接触爆炸载荷下的防护效能与机理展开研究。研究结果表明:相比于柔性大变形式防雷舱中的平台结构,夹芯式防雷舱中的芯材结构对其前舱壁的支撑作用、对所传递载荷的缓冲能力及吸能效果都有明显的增强,可有效提高防雷舱的防护能力;泡沫铝置于弧形板间并不能充分发挥泡沫铝材料的变形吸能特性,弧形板置于液舱中将导致液舱水中的能量汇聚。In order to further improve the underwater protection ability of defensive structures,sandwich structure is applied to the defensive structures.By using the finite element numerical simulation method,the protection efficiency and mechanism of a defensive structure subjected to underwater contact explosion load were studied from two aspects:the typical load-bearing characteristics of the main cabin wall of the defensive structure and the energy absorption characteristics of each part of the structure.The results show that,compared with the platform structure in a flexible large variant defensive structure,the core material structure in the sandwich lightning protection cabin has significantly enhanced the support effect of its front bulkhead,the buffer capacity of the transmitted load and the energy absorption effect,and effectively improved the protection capacity of the defensive structure.At the same time,the aluminum foam placed in between the arcuate panel cannot fully exert the deformation energy absorption characteristics of the aluminum foam.The arcuate panel will lead to the energy gathering in the liquid cabin.

关 键 词：水下接触爆炸 防雷舱 夹芯结构 毁伤特性 防护效能 

分 类 号：O389[理学—流体力学]