杆式射流对充液防护结构的毁伤机理及影响因素的数值模拟

陈兴; 周兰伟; 李福明; 王毅; 李志文; 韩斌

doi:10.11858/gywlxb.20200626

杆式射流对充液防护结构的毁伤机理及影响因素的数值模拟

doi: 10.11858/gywlxb.20200626

陈兴^1,,
周兰伟^2,*, ,,
李福明¹,
王毅¹,
李志文¹,
韩斌¹

1.
重庆前卫科技集团有限公司，重庆　401121
2.
南京理工大学机械工程学院，江苏南京　210094

详细信息

作者简介:
陈　兴（1993－），男，硕士，工程师，主要从事弹药终点效应与目标毁伤技术研究. E-mail：1101650359@qq.com

通讯作者:
周兰伟（1988－），男，博士，讲师，主要从事弹药终点效应与目标易损性研究. E-mail：lwzhou@njust.edu.cn

中图分类号: O385
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出版历程
- 收稿日期: 2020-10-13
- 修回日期: 2020-11-01
- 刊出日期: 2020-12-25

Numerical Simulation on Damage Mechanism and Influencing Factors of JPC Shaped Charge on Liquid-Filled Defensive Structure

CHEN Xing^1
,,
ZHOU Lanwei^{2,*
, ,},
LI Fuming¹,
WANG Yi¹,
LI Zhiwen¹,
HAN Bin¹

1.
Chongqing Qianwei Technology Group Co., Ltd., Chongqing 401121, China
2.
Mechanical Engineering Institute, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

摘要

摘要: 运用ANSYS/LS_DYNA软件分析了聚能射流对充液结构的毁伤，初步获得了药型罩壁厚和材料等参数对聚能战斗部水下作用的影响特性。药型罩壁厚$\delta $在0.04D_k～0.06D_k(D_k为装药直径)之间形成的射流对充液防护结构具有较优的侵彻性能；当$\delta $ < 0.04D_k时，杆流成型结构较差，在水中的动能抗衰减性能较低；$\delta $ > 0.06D_k时，射流的初始动能低，靶后效果差。药型罩可采用纯铁、紫铜和钽3种材料，其中纯铁射流的侵彻能力最高，钽射流在水中的动能抗衰减性能最好，紫铜射流具有较好的综合性能。
- 杆式射流 /
- 充液防护结构 /
- 药型罩壁厚 /
- 药型罩材料 /
- 毁伤
Abstract: The damage of shaped charge jet to liquid-filled structure was analyzed by ANSYS/LS_DYNA software.The influence of liner thickness and material parameters on the performance of shaped charge warhead under water is obtained. The thickness of liner between 0.04D_kand0.06D_k, jetting penetrator charge （JPC） has excellent penetration performance for the liquid-filled defensive structure; When $\delta $ < 0.04D_k, the JPC forming structure is poor, and the decay rate of the kinetic energy in the water is faster.When $\delta $ > 0.06D_k, the initial kinetic energy of the JPC is low, and the effect of the after-target effect is poor; It is also illustrated that among three kinds of linear materials including iron, copper and tantalum: Pure iron JPC has the highest penetration ability; Tantalum JPC has the best water storage kinetic energey performance; Copper JPC has better overall performance.
- jetting penetrator charge /
- liquid-filled defensive structure /
- liner thickness /
- liner material /
- damage

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图 1 杆式射流聚能战斗部结构

Figure 1. JPC cumulative warhead structure

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图 2 充液防护结构示意图

Figure 2. Schematic of liquid-filled defensive structure

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图 3 数值计算模型

Figure 3. Numerical calculation model

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图 4 不同时刻EFP在水中的侵彻过程

Figure 4. Penetration of EFP in water at different times

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图 5 EFP在水中的侵彻距离

Figure 5. EFP penetration distance in water

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图 6 射流侵彻过程中液舱的压力变化

Figure 6. Change of tank pressure during jet penetration

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图 7 气腔形状变化过程

Figure 7. Process of air cavity shape change

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图 8 不同时刻杆流在水中的形态

Figure 8. JPC shape in the water at different times

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图 9 杆流动能衰减-时间历程

Figure 9. JPC kinetic energy-time curve

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图 10 前壁面不同位置的压力-时间曲线

Figure 10. Pressure-time curves at different positions of front wall

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图 11 后壁面不同位置的压力-时间曲线

Figure 11. Pressure-time curves at different positions of rear wall

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图 12 壁面整体位移响应曲线

Figure 12. Displacement response curves of overall wall

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图 13 充液结构前、后壁面的变形量

Figure 13. Deformation of the front and rear walls of the liquid-filled structure

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图 14 药型罩壁厚对杆流水中动能衰减的影响

Figure 14. Influence of wall thickness of charge cover on kinetic energy attenuation of JPC

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图 15 不同壁厚充液结构壁面的变形量

Figure 15. Wall deformation of liquid-filled structure with different wall thicknesses

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图 16 药型罩材质对杆流水中动能衰减的影响

Figure 16. Influence of material of charge cover on kinetic energy attenuation of JPC in water

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图 17 不同材质充液结构壁面的变形量

Figure 17. Wall deformation of liquid-filled structure with different materials

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表 1 Comp.B炸药材料参数

Table 1. Material parameters of Comp.B

Material	$\;\rho $/（g∙cm⁻³）	D/（km∙${\rm{s} }$⁻¹）	A/GPa	B/GPa	R₁	R₂	$\omega$_C	p_CJ/GPa	E_c/（kJ∙cm⁻³）
Comp.B	1.717	7.98	524.2	7.687	4.2	1.1	0.34	29.5	8.5

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表 2 空气和水相关参数^[12]

Table 2. Parameters of air and water^[12]

Material	$\;\rho $/（g∙cm⁻³）	C/（km∙${\rm{s} }$⁻¹）	S₁	S₂	S₃	$\omega$_m	E₀/（J∙kg⁻³）	V₀
Air	1.25 × 10⁻³	3.440	0	0	0	1.4	0	0
Water	1.02	1.647	2.56	1.986	1.2268	0.5	0	1

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表 3 金属材料相关参数^[13-14]

Table 3. Material parameters of metal^[13-14]

Material	$\;\rho $/（g·cm⁻³）	A_J-C/MPa	B_J-C/MPa	C_J_-_C	n	m
45 steel	7.830	350	300	0.014	0.26	1.03
Al	2.797	265	426	0.015	0.34	1.00
Fe	7.890	175	380	0.060	0.32	0.55
Cu	8.960	90	292	0.025	0.31	1.09
Ta	16.654	142	164	0.057	0.32	0.88
W	19.224	1500	180	0.016	0.12	1.00

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表 4 杆流动能衰减情况

Table 4. Kinetic energy attenuation of JPC

Penetration stage	E_ki/kJ	ΔE_k/kJ	Δt/$ {\text{μ}}{\rm{s}}$	Attenuation rate/（ kJ·s⁻¹）
Front wall	7.60	1.00	10	10⁵
Water	6.60	4.53	265	1.71×10⁴
Rear wall	2.07	0.34	30	1.13×10⁴

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表 5 JPC侵彻不同壁厚防护结构的形态对比

Table 5. Comparison of the morphology of JPC after penetrating the defensive structure for different wall thicknesses

$\delta $	v₀/（m·s⁻¹）	Shape of JPC
$\delta $	v₀/（m·s⁻¹）	D_p = 0 cm	D_p = 15 cm	D_p = 30 cm
0.02D_k	3503
0.04D_k	2643
0.06D_k	2095
0.08D_k	1691
0.10D_k	1330

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表 6 不同壁厚结构形成杆流的壁面穿孔直径和后效靶穿深

Table 6. Wall perforation diameter and target penetration of JPC for different wall thicknesses

$\delta $/cm	Front wall diameter/cm	Rear wall diameter/cm	Aftereffect target penetration depth/cm
0.02D_k	0.252D_k	0.195D_k	0
0.04D_k	0.268D_k	0.146D_k	0.2D_k
0.06D_k	0.308D_k	0.206D_k	0
0.08D_k	0.656D_k	0	0
0.10D_k	1.110D_k	0	0

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表 7 JPC侵彻不同材质防护结构的形态对比

Table 7. Morphological comparison of protective structures with different materials penetrated by JPC

Liner	v₀/（m·s^–1）	Shape of JPC
Liner	v₀/（m·s^–1）	D_p = 0 cm	D_p = 15 cm	D_p = 30 cm
Al	4547		Broken	Broken
Fe	3171
Cu	2643
Ta	1648
W	910

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表 8 不同材质结构形成杆流的壁面穿孔直径和后效靶穿深

Table 8. The wall perforation diameter and the target penetration depth of JPC formed by different material structures

Liner material	Front wall diameter/cm	Rear wall diameter/cm	Aftereffect target penetration depth/cm
Al	0.418D_k	0	0
Fe	0.232D_k	0.098D_k	0.6D_k
Cu	0.268D_k	0.146D_k	0.2D_k
Ta	0.250D_k	0.162D_k	0
W	0.892D_k	0.116D_k	0

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