延时起爆对串联EFP成型及其侵彻效应的影响

徐浩铭; 顾文彬; 曾政; 王振雄; 赵长啸

doi:10.11858/gywlxb.2014.01.013

延时起爆对串联EFP成型及其侵彻效应的影响

doi: 10.11858/gywlxb.2014.01.013

解放军理工大学工程兵工程学院，江苏南京 210007

基金项目: 国家科技支撑计划项目(2012BAK05B01)

详细信息

作者简介:
徐浩铭(1985-), 男, 博士研究生, 主要从事弹药工程研究.E-mail:xuhaoming2012@sina.com

中图分类号: O385;TJ410.3
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出版历程
- 收稿日期: 2012-01-02
- 修回日期: 2013-09-22

Effect of Delay Time on Formation and Penetration of Tandem EFP

Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China

摘要

摘要: 为了解决在大块度障碍物上快速开孔且孔深和孔径符合要求的难题，提出了一种前、后两级均为爆炸成型弹丸(EFP)装药的新型串联聚能装药结构。利用LS-DYNA3D有限元软件，对串联EFP装药的成型过程进行了数值仿真，分析了两级装药延时起爆对后级EFP成型的影响，并在此基础上开展了串联EFP装药侵彻45钢靶实验。结果表明：该串联EFP装药结构可充分发挥前、后两级EFP的侵彻能力，提高了侵彻效果。
- 串联战斗部 /
- 串联爆炸成型弹丸 /
- 延时控制 /
- 侵彻 /
- 数值仿真
Abstract: In order to solve the problem about fast perforation of hunk fraise with enough depth and width, a new tandem shaped charge structure is proposed, which is composed of two same structure of EFP (explosively formed projectile) shaped charge.Using finite element software LS-DYNA3D, the forming process of this new structure and the effect of delay time on the forming process of tandem EFP are simulated and analyzed.On this basis, an experiment for tandem EFP penetrating 45 steel target is conducted.The results show that the tandem EFP charge can make full use of the penetration capabilities of two shaped charge, and the penetration effect is greatly improved.
- tandem warhead /
- tandem EFP /
- delay control /
- penetration /
- numerical simulation

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图 1 微秒起爆控制系统

Figure 1. Microsecond detonation control system

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图 2 串联EFP装药的整体模型

Figure 2. The whole model of tandem EFP charge

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图 3 不同炸高条件下EFP侵彻钢靶的数值模拟与实验结果对比

Figure 3. Comparison of simulated and experimental results of steel target penetrated by EFP at various height of burst

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图 4(a) 后级EFP的最大速度与装药间距的关系

Figure 4(a). Relationship between maximum velocity of postpositive EFP and interval distance

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图 4(b) 后级EFP的长径比与装药间距的关系

Figure 4(b). Relationship between the length to diameter ratio and interval distance

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图 5 串联EFP装药侵彻钢靶仿真(b=200 mm)

Figure 5. Numerical simulation of tandem EFP charge penetrating the steel target (b=200 mm)

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图 6 实验设置

Figure 6. Experimental set-up

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图 7 串联EFP装药侵彻钢靶实验结果

Figure 7. Experimental results of tandem EFP charge penetrating the steel target

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图 8 数值模拟与实验结果的对比

Figure 8. Comparison of numerical simulation and experimental results

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表 1 炸药的计算参数

Table 1. Computation parameters of explosive

ρ/(g/cm³)	v/(km/s)	p_CJ/(GPa)	E₀/(GPa)	A/(GPa)	B/(GPa)	R₁	R₂	ω
1.70	8.4	30	10.0	56.4	6.801	4.1	1.3	0.36

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表 2 紫铜药型罩的计算参数

Table 2. Computation parameters of copper liner

ρ/(g/cm³)	C/(km/s)	S₁	S₂	S₃	γ₀	a	E₀/(GPa)
8.96	4.75	3.8	2.74	0.125	1.346	0.34	0.0

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表 3 不同炸高条件下侵彻深度和穿孔直径的数值模拟结果和实验结果

Table 3. Simulated and experimental results of penetration depth and expanded diameter at various height of burst

H/(mm)	P/R		d/R
H/(mm)	Sim.	Exp.	Sim.	Exp.
150	0.73	0.74	0.557	0.563
180	0.80	0.78	0.525	0.530
210	0.85	0.86	0.498	0.495
240	0.89	0.88	0.477	0.472
270	0.90	0.89	0.460	0.454
300	0.90	0.90	0.455	0.451

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表 4 串联EFP装药侵彻钢靶仿真计算结果

Table 4. Numerical results of tandem EFP charge penetrating the steel target

b/(mm)	Δt/(μs)	P/(mm)	P/D	d/(mm)	d/D
200	10	91.3	1.41	25.8	0.40
200	20	95.8	1.47	25.2	0.39
200	25	96.7	1.49	25.0	0.38
200	30	94.4	1.45	25.9	0.40
200	40	84.2	1.30	27.7	0.43

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表 5 串联EFP装药侵彻钢靶实验结果

Table 5. Experimental data of tandem EFP charge penetrating the steel target

Exp.No.	Δt/(μs)	P/(mm)	P/D	d/(mm)	d/D
A1, A2		108	1.661	20	0.308
B1, B2	10	84	1.292	26	0.400
B3, B4	20	99	1.523	25	0.385
B5, B6	25	102	1.569	23	0.354
B7, B8	30	91	1.400	27	0.415
B9, B10	40	83	1.277	28	0.431

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