舱室模型内爆炸载荷下预制孔板的变形规律

赵鹏铎; 王庆; 张磊; 张鹏; 黄松; 徐豫新

doi:10.11858/gywlxb.20180531

舱室模型内爆炸载荷下预制孔板的变形规律

doi: 10.11858/gywlxb.20180531

赵鹏铎^1,,
王庆^{1, 2},
张磊¹,
张鹏^{1, 2},
黄松^{1, 2},
徐豫新³

1.
海军研究院, 北京 100161
2.
中北大学机电工程学院, 山西太原 030051
3.
北京理工大学爆炸科学与技术国家重点实验室, 北京 100081

基金项目:

国家自然科学基金 11302259

详细信息

作者简介:
赵鹏铎(1983-), 男, 博士, 工程师, 主要从事舰船爆炸毁伤与防护研究. E-mail:zhaopengduo@163.com

中图分类号: O521.9;O383.3
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出版历程
- 收稿日期: 2018-03-28
- 修回日期: 2018-04-10

Deformation of Plates with Pre-formed Holes under Internal Blast Loading in Cabin Model

ZHAO Pengduo^1
,,
WANG Qing^{1, 2},
ZHANG Lei¹,
ZHANG Peng^{1, 2},
HUANG Song^{1, 2},
XU Yuxin³

1.
Naval Research Academy, Beijing 100161, China
2.
College of Mechatronic Engineering, North University of China, Taiyuan 030051, China
3.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 为研究舱室模型内爆炸载荷下预制孔板的动态响应，实验验证舱室模型内偏置孔板和均匀孔板的变形规律，并与无孔板的变形规律对比，同时建立了一种模拟舱室的仿真模型，进行内爆炸载荷下的数值计算，分析典型测点内爆炸冲击波的分布，研究预制孔板的挠度变形规律。结果表明：预制孔板的局部强度减弱对挠度变形的增益大于泄爆效应的影响，内爆冲击波在舱室模型内部存在反射和汇聚现象，并在毫秒量级后期存在准静态特性，模拟结果与实验结果一致，同时预制孔板不同区域减薄率存在差异。研究结果可以为舱内爆炸冲击波-破片耦合损伤作用的机理分析提供依据。
- 舱室模型 /
- 预制孔板 /
- 内爆冲击波 /
- 挠度增益 /
- 减薄率
Abstract: In order to investigate the dynamic response of plates with preformed holes under internal blast load in the cabin model, the deformations of the plates with offset preformed holes and the plates with uniform preformed holes in the cabin model were experimentally investigated.The results are also compared with that of the plates with non-preformed holes.The numerical calculation of the internal blast load was carried out by using established simulation model of cabin.The distribution of internal blast shock waves at typical gauge points was analyzed and the deformation rules of plates with preformed holes were studied as well.The research results indicate that the effect of gain of deflection deformation obtained from decreasing local strength due to the preformed holes is greater than that of the blast venting.The shock wave exhibits the reflection and convergence phenomena inside the cabin model and a quasi-static feature during the late stage of milliseconds.The simulation results are consistent with the experimental ones.At the same time, there are differences between the thinning rates in different areas of the plates with preformed holes.The current research can provide reference for the analysis of the mechanism of coupling damage between shock wave and fragments in the cabin.
- cabin model /
- plates with pre-formed holes /
- internal blast shock waves /
- gain of deflection /
- thinning rate

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图 1 预制孔板设计流程

Figure 1. Design flow of pre-formed holes plate

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图 2 实验模型

Figure 2. Experimental setup

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图 3 目标板变形效果

Figure 3. Deformation of target plates

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图 4 目标板侧视图

Figure 4. Side view of target plates

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图 5 减薄率测试区域划分

Figure 5. Area division of thinning rate tests

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图 6 各区域减薄率

Figure 6. Thinning rate in different areas

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图 7 计算模型

Figure 7. Numerical model

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图 8 预制孔板计算模型

Figure 8. Numerical model of preformed holes plate

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图 9 内爆冲击波传播云图

Figure 9. Contour of internal blast shock wave propagation

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图 10 仿真测点上的冲击波压力时程曲线

Figure 10. Shock wave overpressure-time history curves at simulated gauge points

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图 11 目标板变形和最大挠度

Figure 11. Target plates deformation and maximum deflection

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图 12 三种目标板中点位移曲线

Figure 12. Midpoint displacement-time curve of three target plates

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表 1 实验最大变形挠度

Table 1. Experimental maximum deformation deflection

Target plate	Maximum deformation deflection/mm
Target plate	Measured value	Deviation	Correction value
1-1	85.6	-2.1	83.5
1-2	86.5	-2.1	84.4
2-1	88.8	-2.1	86.7
2-2	92.2	-4.5	87.7
3-1	101.5	-10.3	91.2
3-2	109.8	-15.8	94.0

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表 2 减薄率统计

Table 2. Thinning rate statistics

Target plate	Target plate actual thickness/mm		Mid point thickness/mm	The average of Mid area/mm		The average of edge area/mm
1-1	1.76		1.37	1.56		1.62
1-2	1.83		1.37	1.68		1.75
3-1	1.84		1.50	1.56		1.68
3-2	1.77		1.31	1.56		1.68

Target plate	Target plate actual thickness/ mm	Mid point thickness/ mm	The average of Mid area 1/mm	The average of Mid area 2/mm	The average of edge area 1/mm	The average of edge area 2/mm
2-1	1.82	1.43	1.56	1.56	1.72	1.56
2-2	1.81	1.56	1.62	1.56	1.81	1.62

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表 3 Q235钢参数

Table 3. Parameters of Q235 steel

ρ/(kg·m^-3)	EOS	Bulk modulus/ GPa	Ref.temperature/K	Specific heat/ (J·kg^-1·K^-1)
7 830	Linear	175	293	477

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表 4 Cowper-Symonds强度模型部分参数

Table 4. Some parameters of Cowper-Symonds strength model

Shear modulus/GPa	Yield stress/MPa	n	D/s^-1	q
80	235	0	40	5

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表 5 测点冲量对比

Table 5. Impulse comparison between gauge points

Gauge	Total impulse/(Pa·s)
Gauge	in 1 ms	in 2 ms	in 6 ms
1	996.10	1 787.58	5 143.99
2	921.76	1 707.36	5 052.09
3	742.53	1 500.95	4 719.41

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表 6 挠度对比与误差

Table 6. Deflection comparison and deviation

Target plate	Maximum deflection/mm		deviation/%
Target plate	Exp.	Sim.	deviation/%
Non preformed hole plate	83.95	72.05	-14.18
Offset preformed holes plate	87.20	74.69	-14.35
Uniform preformed holes plate	92.60	79.16	-14.51

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