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

被引：0
|
作者：
Hou H.-L. [1 ]
Wang K. [1 ]
Chai S.-L. [1 ]
Li D. [1 ]
Zhao Z.-J. [1 ]
机构：
[1] Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2023年 / 27卷 / 10期
关键词：
damage characteristics; defensive structure; protective effectiveness; sandwich structure; underwater contact explosion;
D O I：
10.3969/j.issn.1007-7294.2023.10.012
中图分类号：
学科分类号：
摘要：
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. © 2023 China Ship Scientific Research Center. All rights reserved.
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页码：1550 / 1561
页数：11
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