非对称中空环形聚能装药成型与侵彻特性影响因素分析

李召婷; 王树有; 孙圣杰; 蒋建伟; 门建兵

doi:10.11883/bzycj-2024-0074

非对称中空环形聚能装药成型与侵彻特性影响因素分析

doi: 10.11883/bzycj-2024-0074

李召婷^1,,
王树有^{1, 2, ,},
孙圣杰¹,
蒋建伟¹,
门建兵^{1, 2}

1.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081
2.
北京理工大学唐山研究院，河北唐山 063000

基金项目: 爆炸科学与安全防护全国重点实验室（北京理工大学）自主研究课题（YBKT23-09）

详细信息

作者简介:
李召婷（1999－　），女，硕士研究生，3120210204@bit.edu.cn

通讯作者:
王树有（1977－　），男，博士，副教授，wangsy@bit.edu.cn

中图分类号: O381; TJ410
计量
- 文章访问数: 42
- HTML全文浏览量: 6
- PDF下载量: 36
- 被引次数: 0
出版历程
- 收稿日期: 2024-03-15
- 修回日期: 2024-05-13
- 网络出版日期: 2024-05-14

Analysis of influencing factors on formationand penetration capabilitiesof asymmetric hollow annular shaped charge

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063000, Hebei, China

摘要

摘要: 为减弱中空环形聚能装药中中心侵彻体对后级结构的破坏作用，通过改变环锥罩的偏心距离和壁厚，调整了装药和药型罩的质量分布，使之形成准直环形射流，研究了炸高对环形射流侵彻威力的影响规律。数值模拟结果表明：内壳为铝合金时的中心孔平均侵彻深度较内壳为钢时的平均侵彻深度低36.13%；非偏心环锥罩形成的射流存在径向偏移，侵彻能力较弱。当环锥罩顶向外侧偏移0.05d（d为环形装药厚度）时，射流准直性较好，环形射流侵彻深度较大；随着药型罩壁厚的增加，射流头部速度不断减小，当壁厚为0.045d时，偏心环锥罩形成的环形射流侵彻能力较强；环形射流侵彻深度对炸高较为敏感，在炸高为1.12d时，环形射流侵彻深度较大。针对非偏心环锥罩和偏心环锥罩两种药型罩结构开展的静破甲试验表明，环形射流侵彻深度和扩孔直径的试验结果与数值模拟结果误差小于12%，验证了数值模拟模型的可靠性。
- 环形聚能装药 /
- 偏心药型罩 /
- 射流成型 /
- 射流侵彻
Abstract: The annular shaped charges serve as the precursor of a tandem warhead, prized for its ability to create large diameter perforation in targets. In an effort to enhance the penetration capacity of the annular shaped charge jet and mitigate the impact of the inner casing on subsequent sections induced by a reversed penetrator, a novel approach was taken to implement the investigation. Four different combinations of inner and outer casing materials based on steel and aluminum alloy were explored. It was found that when the inner casing was made of aluminum alloy, the average penetration depth in the rear target was 36.13% lower than that when the inner casing was made of steel. Selecting an inner casing of aluminum alloy and an outer casing of steel, the effects of tip offset, liner thickness, and standoff distance on the formation and penetration characteristics of the annular jet were further investigated. The results show that the jet formed by the non-eccentric liner exhibits radial offset, negatively influencing its penetration capability. However, by offsetting the liner tip to the outer side by 0.05d (where d represents the radial thickness of the annular shaped charge), both the forming and penetration performances of the jet are significantly improved. In addition, as the liner thickness increases, the velocity of the jet tip gradually decreases. Notably, the annular jet formed by an eccentric conical liner with a thickness of 0.045d exhibits superior penetration performance. Furthermore, the standoff distance emerges as a critical factor influencing the penetration capability of the annular jet. Optimal performance is achieved at a standoff distance of 1.12d. Under the same scenario, jet penetration tests were implemented. The difference between the radius of the penetration tunnel from numerical and experimental study lies within 12%. Subsequently, the reliability of the numerical simulation model and the conclusions are verified.
- annular shaped charge /
- eccentric liner /
- jet formation /
- jet penetration

HTML全文

图 1 中空环形聚能装药结构

Figure 1. Hollow annular shaped charge structure

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图 2 中空环形聚能装药有限元模型

Figure 2. Finite element model of hollow annular shaped charge

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图 3 环形聚能装药与后端靶板有限元模型

Figure 3. Finite element model of annular shaped charges and rear target

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图 4 不同壳体材料组合对后端靶板的侵彻结果

Figure 4. Penetration results of rear target with different casing material combinations

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图 5 不同偏心距离时环形射流成型及侵彻结果

Figure 5. Formation and penetration results of annular jet at different eccentric distances

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图 6 环形射流径向偏移量示意图

Figure 6. Illustration of radial offset of annular jet

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图 7 环形射流的径向偏移量和侵彻深度随偏心距离的变化

Figure 7. Radial offset and penetration depth of annular jet at different eccentric distances

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图 8 不同药型罩壁厚时环形射流成型及侵彻结果

Figure 8. Formation and penetration results of annular jet at different liner thicknesses

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图 9 环形射流的头部速度和侵彻深度随药型罩壁厚变化规律

Figure 9. Tip velocity and penetration depth of annular jet at different liner thicknesses

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图 10 不同炸高时环形射流侵彻结果

Figure 10. Penetration results of annular jet at different standoff

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图 11 环形射流的侵彻深度随炸高的变化规律

Figure 11. Penetration depth of annular jet at different standoff

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图 12 非偏心环锥罩

Figure 12. Non-eccentric liner

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图 13 偏心环锥罩

Figure 13. Eccentric liner

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图 14 试验布置示意图

Figure 14. Schematic diagram of test layout

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图 15 靶板侵彻结果

Figure 15. Penetration results of the target

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图 16 非偏心环锥罩的试验结果和数值模拟结果对比

Figure 16. Comparison between experimental and numerical simulation results of non-eccentric liner

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图 17 偏心环锥罩的试验结果和数值模拟结果对比

Figure 17. Comparison between experimental and numerical simulation results of eccentric liner

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图 18 侵彻后的靶板几何参数示意图

Figure 18. Schematic diagram of geometric parameters of penetrated target

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表 1 装药JWL状态方程参数

Table 1. 1JWL equation of state parameters of PBX-9404

ρ/(kg·m⁻³)	A/GPa	B/GPa	R₁	R₂	ω	v_D/(m·s⁻¹)	E₀/(kJ·m⁻³)	p_CJ/GPa
1 840	852.4	18.02	4.6	1.3	0.38	8 800	1.02e7	37

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表 2 药型罩和壳体材料参数

Table 2. Material parameters of liner and casing

材料	ρ/(kg·m⁻³)	K/GPa	G/GPa	A₁/MPa	B₁/MPa	n	C	m
高导无氧铜	8 960	129	46	90	292	0.31	0.025	1.09
4340钢	7 830	159	81.8	792	510	0.26	0.014	1.03

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表 3 靶板和壳体材料参数

Table 3. Material parameters of target and casing

材料	ρ/(kg·m⁻³)	γ	c₁/(m·s⁻¹)	S₁
铝合金	2 785	2.00	5 328	1.338
装甲钢	7 860	1.67	4 610	1.730

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表 4 靶板Johnson-Cook失效模型参数^[19]

Table 4. Failure parameters of target^[19]

材料	D₁	D₂	D₃	D₄	D₅
装甲钢	−2.2	5.43	−0.47	0.16	0.63

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表 5 不同壳体材料组合时后端靶板的中心孔尺寸

Table 5. Core hole sizes in rear target with different casing material combinations

壳体材料	后端靶板中心孔深度/d	后端靶板中心孔直径/d
外钢内钢	1.600（打穿）	0.24
外钢内铝合金	1.008	0.44
外铝合金内钢	1.600（打穿）	0.24
外铝合金内铝合金	1.036	0.44

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表 6 试验中的环形聚能装药结构参数及炸高

Table 6. Structural parameters and standoff of annular shaped charge in the test

环锥罩	Δr/d	b/d	l/d
非偏心环锥罩	0	0.045	1.12
偏心环锥罩	0.05	0.045	1.12

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表 7 数值模拟结果与试验结果的对比

Table 7. Comparison between numerical simulation and experimental results

罩型	方法	d₁	d₂	d₃	h
非偏心环锥罩	试验	4.40d	3.44d	1.00d	0.68d
	数值模拟	4.48d	3.68d	0.88d	0.64d
	误差	1.81%	6.98%	12.00%	5.88%
偏心环锥罩	试验	4.74d	3.84d	0.80d	0.80d（打穿）
	数值模拟	4.48d	4.00d	0.88d	0.80d（打穿）
	误差	5.08%	4.17%	10.00%	−

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