近爆载荷作用下液舱的吸能研究

李思宇; 李晓彬; 赵鹏铎; 胡翔

doi:10.3969/j.issn.1673-3185.2017.01.015

近爆载荷作用下液舱的吸能研究

doi: 10.3969/j.issn.1673-3185.2017.01.015

1.
武汉理工大学交通学院, 湖北武汉 430063
2.
海军装备研究院, 北京 100073

基金项目:

国家自然科学基金资助项目 11302259

非线性力学国家重点实验室开放基金资助项目 LNM201505

详细信息

作者简介:
李思宇, 男, 1991年生, 硕士生。研究方向:结构安全与可靠性。E-mail:596540197@qq.com

通信作者:
李晓彬(通信作者), 男, 1971年生, 博士, 教授。研究方向:结构安全与可靠性。E-mail:lxbmark@163.com

中图分类号: U661.4;O38
计量
- 文章访问数: 155
- HTML全文浏览量: 29
- PDF下载量: 206
- 被引次数: 0
出版历程
- 收稿日期: 2016-07-04
- 网络出版日期: 2016-12-28
- 刊出日期: 2017-01-07

Research into energy absorption of liquid cabin subjected to close-range explosion

Siyu LI^1
,,
Xiaobin LI^{1
, ,},
Pengduo ZHAO²,
Xiang HU¹

1.
School of Transportation, Wuhan University of Technology, Wuhan 430063, China
2.
Naval Academy of Armament, Beijing 100073, China

摘要

摘要: 为研究近距爆炸载荷作用下液舱各部分的吸能情况，根据实验建立数值仿真模型，研究在有无液体、不同厚度比和不同水层厚度条件下舱室变形和各部分吸能的占比情况。结果表明，液体介质的存在改变了液舱的吸能模式，液舱总吸能主要受到舱室外壁厚度和水层厚度的影响，厚度比和水层厚度的变化对舱壁变形模式和爆炸能量在液舱各部分的占比有一定影响。对液舱各部分吸能机理的阐述，可作为液舱设计的参考依据。
- 近距爆炸 /
- 防护液舱 /
- 冲击 /
- 吸能
Abstract: In order to study the energy absorption of different parts of a liquid cabin under a close-range explosion, a fluid-structure coupling model is built on the basis of experiments, and the deformation of the bulkhead and energy absorption ratio of different parts of the liquid cabin are analyzed, in which the influence of the water, bulkhead thickness ratio and water thickness are also discussed. The results show that the existence of a liquid medium can change the energy absorption model of a cabin. The total energy absorption is mainly affected by the front bulkhead thickness and water thickness, and alterations to the bulkhead thickness ratio or water thickness can also affect the deformation model of the bulkhead and energy absorption ratio of different parts of the cabin. A logical explanation of the energy absorption mechanisms of the liquid cabin is proposed, and some useful suggestions for designs are given.
- close-range explosion /
- warship protective tank /
- shock /
- energy absorption

HTML全文

图 1 实验模型结构和实体图

Figure 1. Test model structure and entity graph

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图 2 数值仿真模型

Figure 2. Simulation model

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图 3 液舱外壁变形

Figure 3. Deformation of front bulkhead

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图 4 仿真与实验对比

Figure 4. Contrast of simulation and experimental results

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图 5 有无液体介质舱壁变形模式

Figure 5. Deformation mode of bulkhead

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图 6 能量转化

Figure 6. Energy transformation

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图 7 不同厚度比液舱舱壁变形对比

Figure 7. Contrast of deformation mode of bulkheads

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图 8 不同厚度比液舱吸能对比

Figure 8. Contrast of energy absorption mode of liquid tank

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图 9 不同水层厚度的液舱舱壁变形对比

Figure 9. Contrast of deformation mode of bulkhead

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图 10 不同水层厚度的液舱吸能对比

Figure 10. Contrast of energy absorption mode of liquid tank

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表 1 模型参数

Table 1. Model parameters

ρ/(kg·m^-3)	E/MPa	A	B	n	c	m
7 850	210	249.2	889	0.3	0.746	0.094

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