浅埋炸药加载下含空穴泡沫铝夹芯板动态响应机制

doi:10.12382/bgxb.2022.1195

摘要/Abstract

摘要：

空穴结构可以对其后方区域进行有效防护,为研究空穴结构对泡沫铝夹芯板结构能量衰减性能的影响,通过改变泡沫铝芯层空穴的直径以及厚度,探究浅埋炸药爆炸加载实验条件下空穴尺寸对夹芯板挠度、板后次生冲击波以及泡沫铝芯层吸能效率的影响。研究结果表明:随着泡沫铝中空穴厚度的增加,结构后方的次生冲击波强度显著降低,当空穴直径为0.3D(D为自由面直径)、厚度为1/3H(H为泡沫铝板厚度)时中心压力强度最低,约为无孔泡沫铝板的63%;在直径为0.3D、厚度为2/3H情况下泡沫铝芯层的总变形量最大,相比对照组提升61%;空穴结构可以有效增强泡沫铝夹芯板结构的吸能性能。

关键词: 泡沫铝, 浅埋炸药, 空穴结构, 抗爆性能

Abstract:

The cavity structure can effectively protect the rear area. In order to study the influence of the cavity structure on the energy attenuation performance of aluminum foam sandwich plate structure, the influence of the cavity size on the deflection of sandwich plate, the secondary shock wave behind the plate and the energy absorption efficiency of aluminum foam core layer under the experimental conditions of explosion loading of shallow-buried explosive is investigated by changing the diameter and thickness of the cavity in the aluminum foam core layer. The results show that the intensity of secondary shock wave behind the structure decreases significantly with the increase of the cavity thickness in the aluminum foam. When the cavity diameter is 0.3D and its thickness is 1/3H, the central pressure intensity is the lowest, which is about 63% of that of the non-porous aluminum foam plate. The volume strain is the largest when the cavity diameter is 0.3D and its thickness ias 2/3H, which is 61% higher than that of the control group. The surface cavity structure can effectively enhance the energy absorption efficiency of aluminum foam sandwich structure.

Key words: aluminum foam, shallow-buried explosive, cavity structure, anti-explosion performance

中图分类号:

O383.1

刘巍, 马宏昊, 徐钦明, 姚象洋, 赵勇, 杨科, 杨辉, 沈兆武. 浅埋炸药加载下含空穴泡沫铝夹芯板动态响应机制[J]. 兵工学报, 2023, 44(12): 3613-3621.

LIU Wei, MA Honghao, XU Qinming, YAO Xiangyang, ZHAO Yong, YANG Ke, YANG Hui, SHEN Zhaowu. Dynamic Response Mechanism of Aluminum Foam Sandwich Plate with Cavity under Shallow-buried Explosive Loading[J]. Acta Armamentarii, 2023, 44(12): 3613-3621.

图/表 10

图1 含空穴泡沫铝夹芯板结构示意图

Fig.1 Structure diagram of aluminum foam sandwich plate with cavity

图2 实验结构装置示意图

Fig.2 Schematic diagram of experimental structure device

图3 PVDF传感器布置示意图

Fig.3 Layout diagram of PVDF sensors

图4 爆炸加载下空穴结构泡沫铝剖面图

Fig. 4 Aluminum foam profiles of cavity structure under explosive loading

图5 实验样本剖面图

Fig.5 Experimental sample profile

图6 前板、背板扫描挠度曲线

Fig.6 Scanned results of face-sheets and back sheet

图7 不同条件对压缩率的影响

Fig.7 The effects of different conditions on compression ratio

图8 不同空穴直径与厚度对芯层总变形量的影响

Fig.8 The effects of different cavity diameters and thicknesses on volume strain

表1 泡沫铝空穴的直径与厚度对结构后侧次生冲击波强度影响

Table 1 The effects of diameter and thickness of aluminum foam cavity on the intensity of secondary shock wave behind the structureMPa

样本编号	距中心距离/mm
样本编号	0	1.5	3.0	4.5	6.0	7.5
DZ	1.47	1.19	0.66	0.46	0.30	0.28
WK-6-00	1.09	1.09	0.77	0.58	0.31	0.23
WK-6-13	1.00	1.03	0.89	0.72	0.47	0.25
WK-6-23	1.23	1.19	1.03	0.96	0.56	0.28
WK-9-00	1.17	1.02	0.86	0.66	0.41	0.18
WK-9-13	1.19	1.08	0.98	0.9	0.58	0.27
WK-9-23	1.36	1.11	0.78	0.41	0.51	0.12
WK-12-00	1.14	0.73	0.64	1.02	1.11	0.45
WK-12-13	0.92	0.75	0.50	0.63	0.65	0.45
WK-12-23	1.21	0.97	0.55	0.75	0.69	0.32

图9 结构后侧次生冲击波强度

Fig.9 Pressure peak of secondary shock wave behind the structure

参考文献 26

[1]	赵振宇, 周贻来, 任建伟, 等. 浅埋炸药爆炸形貌及其冲击作用效应[J]. 爆炸与冲击, 2022, 42(4):52-64.
	ZHAO Z Y, ZHOU Y L, REN J W, et al. Explosion morphology and impacting effects of shallow-buried explosives[J]. Explosion and Shock Waves, 2022, 42(4):52-64. (in Chinese)
[2]	GRUJICIC M, PANDURANGAN B, MOCKO G M, et al. A combined multi-material Euler/Lagrange computational analysis of blast loading resulting from detonation of buried landmines[J]. Multidipline Modeling in Materials Structures, 2006, 4(2): 105-124.
[3]	GRUJICIC M, PANDURANGAN B, HARIHARAN A. Comparative discrete-particle versus continuum-based computational investigation of soil response to impulse loading[J]. Journal of Materials Engineering and Performance, 2011, 20(9): 1520-1535. doi: 10.1007/s11665-011-9844-0 URL
[4]	GRUJICIC M, YAVARI R, SNIPES J, et al. A combined finite-element/discrete-particle analysis of a side-vent-channel-based concept for improved blast-survivability of light tactical vehicles[J]. International Journal of Structural Integrity, 2016, 7(1): 106-141. doi: 10.1108/IJSI-12-2014-0068 URL
[5]	梁茜, 王仲琦, 刘廷军, 等. 浅埋爆炸近场荷载特征研究[J]. 兵器装备工程学报, 2022, 43(12):207-214.
	LIANG X, WANG Z Q, LIU T J, et al. Study on near field load characteristics of shallow buried explosion[J]. Journal of Ordnance Equipment Engineering, 2022, 43(12):207-214. (in Chinese)
[6]	ZHAO Z Y, ZHANG D J, CHEN W J, et al. An analytical model of blast resistance for all-metallic sandwich panels subjected to shallow-buried explosives[J]. International Journal of Mechanics and Materials in Design, 2022, 18: 873-892. doi: 10.1007/s10999-022-09605-w
[7]	金泽宇, 殷彩玉, 谌勇, 等. 分层泡沫铝夹芯球壳对近场水下爆炸的响应[J]. 兵工学报, 2017, 38(增刊1):42-48.
	JIN Z Y, YIN C Y, CHEN Y, et al. Responses of spherical sandwich shells with sraded aluminum foam cores subjected to near-field underwater explosion[J]. Acta Armamentarii, 2017, 38(S1):42-48. (in Chinese)
[8]	REN L J, MA H H, SHEN Z W, et al. Blast response of water-backed metallic sandwich panels subject to underwater explosion experimental and numerical investigations[J]. Composite Structures, 2019, 209:79-92. doi: 10.1016/j.compstruct.2018.10.082 URL
[9]	FAN Z Q, LIU Y B, PENG X A. Blast resistance of metallic sandwich panels subjected to proximity underwater explosion[J]. International Journal of Impact Engineering, 2016, 93:128-135. doi: 10.1016/j.ijimpeng.2016.03.001 URL
[10]	钟云岭, 郭香华, 张庆明. 冲击波在泡沫铝复合结构中的衰减特性理论分析[J]. 兵工学报, 2014, 35(增刊2):322-327.
	ZHONG Y L, GUO X H, ZHANG Q M. Study of the attenuation of shock wave in aluminum foam composite structures[J]. Acta Armamentarii, 2014, 35(S2):322-327. (in Chinese)
[11]	梁民族, 卢芳云, 李翔宇, 等. 爆炸载荷下双层泡沫铝动态响应和能量吸收[J]. 兵工学报, 2016, 37(增刊2):236-240.
	LIANG M Z, LU F Y, LI X Y, et al. Dynamic response and energy absorption of double-layered aluminum foam under blast loading[J]. Acta Armamentarii, 2016, 37(S2):236-240. (in Chinese)
[12]	ISLAM M A, BROWN A D, HAZELL P J. et al. Mechanical response and dynamic deformation mechanisms of closed-cell aluminium alloy foams under dynamic loading[J]. International Journal of Impact Engineering, 2018, 114: 111-122. doi: 10.1016/j.ijimpeng.2017.12.012 URL
[13]	LIU H, CAO Z K, YAO G C, et al. Performance of aluminum foam-steel panel sandwich composites subjected to blast loading[J]. Materials and Design, 2013, 472013:483-488.
[14]	ZHANG J H, CHEN L, WU H, et al. Experimental and mesoscopic investigation of double-layer aluminum foam under impact loading[J]. Composite Structures, 2020, 24: 110859.
[15]	SUN G Y, WANG E D, ZHANG J T, et al. Experimental study on the dynamic responses of foam sandwich panels with different facesheets and core gradients subjected to blast impulse[J]. International Journal of Impact Engineering, 2020, 135:103327. doi: 10.1016/j.ijimpeng.2019.103327 URL
[16]	李永池, 姚磊, 沈俊, 等. 空穴的绕射隔离效应和对后方应力波的削弱作用[J]. 爆炸与冲击, 2005, 25(3): 193-199.
	LI Y C, YAO L, SHEN J, et al. Insulation effect of the cavity on stress wave[J]. Explosion and Shock Waves, 2005, 25(3): 193-199. (in Chinese) doi: 10.1007/BF00742016 URL
[17]	高光发. 防护工程中若干规律性问题的研究和机理分析[D]. 合肥: 中国科学技术大学, 2010.
	GAO G F. Research on several scientific rules in protective engineering and the mechanism analysis[D]. Hefei: University of Science and Technology of China, 2010. (in Chinese)
[18]	范志强, 马宏昊, 沈兆武, 等. PVDF压力计在结构表面爆炸压力测量中的应用技术研究[J]. 兵工学报, 2014, 35(增刊2):27-32.
	FAN Z Q, MA H H, SHEN Z W, et al. Investigation on application of pvdf gauges in blast pressure measurement on structure surfaces[J]. Acta Armamentarii, 2014, 35(S2):27-32. (in Chinese)
[19]	任丽杰. 近场水下爆炸加载下水背固支多孔金属加芯板动力响应研究[D]. 合肥: 中国科学技术大学, 2019.
	REN L J. Dynamic response of water—backed metallic sandwich panels subjected to proximity underwater explosion[D]. Hefei: University of Science and Technology of China, 2019. (in Chinese)
[20]	胡亚峰, 刘建青, 顾文彬, 等. PVDF应力测试技术及其在多孔材料爆炸冲击实验中的应用[J]. 爆炸与冲击, 2016, 36(5):655-662.
	HU Y F, LIU J Q, GU W B, et al. Stress-testing method by PVDF gauge and its application in explosive test of porous material[J]. Explosion and Shock Waves, 2016, 36(5):655-662. (in Chinese)
[21]	NURICK G N, LANGDON G S, CHI Y, et al. Behaviour of sandwich panels subjected to intense air blast-Part l:experiments[J]. Composite Structures, 2009, 91(4):433-441. doi: 10.1016/j.compstruct.2009.04.009 URL
[22]	NURICK G N, SHAVE G C. The deformation and tearing of thin square plates subjected to impulsive loads-an experimental study[J]. International Journal of Impact Engineering, 1996, 18(1):99-116. doi: 10.1016/0734-743X(95)00018-2 URL
[23]	NURICK G N, MARTIN J B. Deformation of thin plates subjected to impulsive loading-a review:Part I:theoretical considerations[J]. International Journal of Impact Engineering, 1989, 8(2):159-70.
[24]	REN L J, MA H H, SHEN Z W, et al. Blast resistance of water-backed metallic sandwich panels subjected to underwater explosion[J]. International Journal of Impact Engineering, 2019, 129:1-11. doi: 10.1016/j.ijimpeng.2019.02.009 URL
[25]	张鹏飞, 刘志芳, 李世强. 内爆炸载荷下梯度泡沫铝夹芯管的动态响应[J]. 爆炸与冲击, 2020, 40(7):17-26.
	ZHANG P F, LIU Z F, LI S Q. Dynamic response of sandwich tubes with graded foam aluminum cores under internal blast loading[J]. Explosion and Shock Waves, 2020, 40(7):17-26. (in Chinese) doi: 10.1023/B:CESW.0000013664.72373.c5 URL
[26]	ARIEF N P, SIGIT P S, LEONARDO G, et al. Numerical study and experimental validation of blastworthy structure using aluminum foam sandwich subjected to fragmented 8 kg TNT blast loading[J]. International Journal of Impact Engineering, 2020, 146:103699. doi: 10.1016/j.ijimpeng.2020.103699 URL