辅助药型罩材料对线型聚能射流性能影响的数值仿真

孙建军; 李如江; 杨玥; 万清华; 张明; 孙淼; 李杨

doi:10.11858/gywlxb.20180542

辅助药型罩材料对线型聚能射流性能影响的数值仿真

doi: 10.11858/gywlxb.20180542

中北大学环境与安全工程学院, 山西太原 030051

基金项目:

国家自然科学基金 11572292

详细信息

作者简介:
孙建军(1990-), 男, 硕士研究生, 主要从事兵器安全技术研究. E-mail:1427669391@qq.com

通讯作者:
李如江(1978—)，男，博士，副教授，主要从事装甲与反装甲技术研究. E-mail:liru7841@mail.ustc.edu.cn

中图分类号: O385
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出版历程
- 收稿日期: 2018-04-23
- 修回日期: 2018-06-05

Numerical Simulation of the Effect of Auxiliary Liner Material on the Performance of Linear Shaped Charge Jet

School of Environment and Saftey Engineering, North University of China, Taiyuan 030051, China

摘要

摘要: 为了提升线型聚能射流的性能，将截顶加辅助药型罩结构应用于线型聚能装药，应用三维有限元分析软件（LS-DYNA）对以紫铜为主体药型罩，Al、Cu和W作为辅助药型罩时形成的线型聚能射流进行了数值仿真，并将其与传统的线型聚能射流进行了对比分析。结果表明：截顶加辅助药型罩结构形成的射流性能更优，并随辅助药型罩材料密度等的增大，射流的延展性、速度及有效质量均有提高，且均优于传统的楔形罩结构；W作为辅助药型罩材料时形成的线型聚能射流，速度较传统的楔形罩结构提高约25.9%，射流的有效长度增加约145%。
- 线型聚能装药 /
- 辅助药型罩 /
- 线型聚能射流 /
- 数值仿真
Abstract: To improve the performance of linear shaped charge jet, this study applies the truncated and auxiliary liner structure to the linear shaped charge.The three-dimensional finite element analysis software (LS-DYNA) was used to simulate the linear shaped charge jet formed with copper as the main liner and Al, Cu and W as auxiliary liner.At the same time, comparison between the formed linear shaped charge jet and the traditional jet is performed, indicating that the jet formed by the truncated and auxiliary liner structure has better performance.With the increase of the density and hardness of the auxiliary liner material, the jet's ductility, speed and effective mass are improved and all of them are superior to the traditional wedge cover structure.Compared with the conventional wedge cover structure, the speed and the effective length of the jet utilizing W as the auxiliary material increase about 25.9% and 145%, respectively.
- linear shaped charge /
- auxiliary liner /
- linear shaped charge jet /
- numerical simulation

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图 1 3种线型聚能装药结构剖面图(单位：mm)

Figure 1. Schematic presentation in cross-section of three types of linear shaped charge structures (Unit:mm)

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图 2 数值计算模型

Figure 2. Simulation model

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图 3 各结构药型罩受爆轰产物压力云图(t=5 μs)

Figure 3. Pressure contour diagram of detonation product for each structural liner (t=5 μs)

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图 4 16 μs时射流的形态

Figure 4. Jet shape at 16 μs

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图 5 30 μs时射流的形态

Figure 5. Jet shape at 30 μs

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图 6 42 μs时射流的形态

Figure 6. Jet shape at 42 μs

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图 7 5种药型罩结构形成射流的速度变化趋势

Figure 7. Velocity trends of jet formation in five types of liner structures

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图 8 5种药型罩结构形成射流的动能变化趋势

Figure 8. Kinetic energy trend of jet formation in five types of liner structures

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表 1 W、Cu和Al材料模型及其状态方程参数

Table 1. Material model and equation of state parameters of W, Cu, Al

Material	ρ/(g·cm^-3)	γ	C₁/(m·s^-1)	S₁	S₂/(m·s^-1)	E/GPa	Y/GPa
W	17.20	1.54	4020	1.237	0	160.0	2.200
Cu	8.90	2.00	3960	1.497	0	46.4	0.120
Al	2.78	0.26	610	1.000	0	64.1	0.089

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表 2 主装药的材料参数^[8]

Table 2. Material parameters of main explosive^[8]

ρ/(g·cm^-3)	A_JWL/GPa	B_JWL/GPa	R₁	R₂	ω	D/(m·s^-1)
1.72	374	3.300	4.5	0.95	0.3	8930

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表 3 各结构药型罩形成线型聚能射流的参数

Table 3. Parameters of liner shaped charge jet formed by various structural liners

Liner type	v/(m·s^-1)		t/μs
Liner type	Head	Tail	t/μs
W-Cu	4439	1130	44
Cu-Cu	4173	924	36
Al-Cu	3904	887	34
Plane	3716	735	19
Wedge	3525	612	17

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参考文献(8)

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