Numerical Simulation of Liner Parameters on Shock Initiation Capability of Thick-cased PBX Charge

LUO Rongwen; LIU Junxin; YANG Jiabin; LI Hongfei; WANG Dengkui

doi:10.7643/issn.1672-9242.2026.07.008

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (7) : 70-79. DOI: 10.7643/issn.1672-9242.2026.07.008

Weapons Equipment

Numerical Simulation of Liner Parameters on Shock Initiation Capability of Thick-cased PBX Charge

LUO Rongwen, LIU Junxin, YANG Jiabin, LI Hongfei, WANG Dengkui

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Abstract

The work aims to explorethe influence of key structural parameters of the shaped charge liner on the shock initiation of thick-cased PBX charges by a shaped charge jet, so as to provide theoretical support for the engineering design of shaped charge warheads against thick-walled targetsand address the challenge that thick-walled missile warheads are difficult to effectively intercept by traditional anti-missile means.Using the LS-DYNA finite element software and based on the ALE fluid-structure interaction algorithm, a numerical model covering the entire process of shaped charge detonation, jet formation, penetration of a thick-walled steel target, and shock initiation of the PBX charge was established. A systematic analysis was conducted on the influence of two core parameters—the half-cone angle and wall thickness of the shaped charge liner—on the jet tip velocity, diameter, and initiation stimulus. Both the half-cone angle and wall thickness of the shaped charge liner significantly affected the residual performance after jet penetration and the initiation capability. Variations in the half-cone angle caused opposite trends in the residual velocity andjet diameter, resulting in a stimulus pattern that first increased and then decreased. Although increasing the wall thickness reduced the residual velocity of the jet, it significantly increased the jet diameter; moreover, a notable enhancement in initiation stimulus was observed within a specific wall thickness range. The simulated initiation threshold of the PBX explosive showed good agreement with existing experimental results reported in the literature.Rational selection of the half-cone angle and wall thickness parameters of the shaped charge liner can significantly enhance the initiation capability of the shaped charge jet against thick-cased PBX charges. The established numerical model is reliable and can provide a theoretical basis for the structural optimization of shaped charge warheads against thick-walled targets.

Key words

shaped charge liner / shaped jet / impact initiation / numerical simulation / initiation threshold / ALE method

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LUO Rongwen, LIU Junxin, YANG Jiabin, LI Hongfei, WANG Dengkui. Numerical Simulation of Liner Parameters on Shock Initiation Capability of Thick-cased PBX Charge[J]. Equipment Environmental Engineering. 2026, 23(7): 70-79 https://doi.org/10.7643/issn.1672-9242.2026.07.008

References

[1] 高雁翎, 张梦湉, 贾晨阳. 2016年国外防空反导发展综述[J]. 战术导弹技术, 2017(2): 16-20.
GAO Y L, ZHANG M T, JIA C Y. Development Review of World Air and Missile Defense System in2016[J]. Tactical Missile Technology, 2017(2): 16-20.
[2] 陈雅萍, 刘杰, 董诗潮, 等. 2023年国外防空反导领域发展综述[J]. 战术导弹技术, 2024(2): 27-35.
CHEN Y P, LIU J, DONG S C, et al. Summary on Development of Foreign Air and Missile Defense Field in2023[J]. Tactical Missile Technology, 2024(2): 27-35.
[3] 王创维, 黄雨辰, 王聪, 等. 2024年国外防空反导领域进展及发展启示[J]. 空天防御, 2025, 8(2): 18-26.
WANG C W, HUANG Y C, WANG C, et al.Progress and Enlightenments of Foreign Air Defense and Anti-Missile Field in 2024[J]. Aerospace Defense, 2025, 8(2): 18-26.
[4] 江增荣, 李向荣, 李世才, 等. 预制破片对战斗部冲击起爆数值模拟[J]. 弹道学报, 2009, 21(1): 9-13.
JIANG Z R, LI X R, LI S C, et al.Numerical Simulation on Shock Initiation of Performed Fragment to Warhead[J]. Journal of Ballistics, 2009, 21(1): 9-13.
[5] 张先锋, 陈惠武, 赵有守. EFP冲击引爆带壳炸药数值模拟研究[J]. 弹道学报, 2006, 18(1): 90-92.
ZHANG X F, CHEN H W, ZHAO Y S.Numerical Simulation of Shelled Explosive Initiated by EFP[J]. Journal of Ballistics, 2006, 18(1): 90-92.
[6] 段卓平, 白志玲, 黄风雷. 非均质固体炸药冲击起爆与爆轰研究进展[J]. 火炸药学报, 2020, 43(3): 237-253.
DUAN Z P, BAI Z L, HUANG F L.Advances in Shock Initiation and Detonation of Heterogeneous Solid Explosives[J]. Chinese Journal of Explosives & Propellants, 2020, 43(3): 237-253.
[7] 耿万钧, 孙兴昀, 曹玉武, 等. 防空反导击爆战斗部技术研究综述[J]. 飞航导弹, 2016(3): 84-88.
GENG W J, SUN X Y, CAO Y W, et al.Summary of Research on Air Defense and Anti-Missile Detonation Warhead Technology[J]. Aerodynamic Missile Journal, 2016(3): 84-88.
[8] JIA X, HUANG Z X, XU M W, et al.Study on Interaction Mechanism between the Shaped Charge Jet and Thick Moving Target[J]. Propellants, Explosives, Pyrotechnics, 2019, 44(8): 1033-1048.
[9] 赵聘, 陈朗, 李金河, 等. 聚能射流侵彻隔板形成的前驱冲击波起爆不同温度炸药特性[J]. 兵工学报, 2021, 42(1): 45-55.
ZHAO P, CHEN L, LI J H, et al.The Characteristics of Explosives Initiated by Precursor Shock Waves in Shaped Charge Jet Penetrating a Bulkhead at Different Temperatures[J]. Acta Armamentarii, 2021, 42(1): 45-55.
[10] 张俊坤, 高欣宝, 熊冉, 等. 射流对间隙靶板屏蔽炸药的冲击起爆[J]. 含能材料, 2014, 22(5): 607-611.
ZHANG J K, GAO X B, XIONG R, et al.Jet Impact Initiation of the Charge Covered with Spaced Target[J]. Chinese Journal of Energetic Materials, 2014, 22(5): 607-611.
[11] 张先锋, 陈惠武, 赵有守. 射弹冲击引爆带壳炸药数值模拟[J]. 弹道学报, 2005, 17(2): 24-27.
ZHANG X F, CHEN H W, ZHAO Y S.Numerical Simulation of Projectile Initiating the Shelled Explosive[J]. Journal of Ballistics, 2005, 17(2): 24-27.
[12] HELD M.Initiation of Explosives, a Multiple Problem of the Physical of Detonation[R]. Livermore: Lawrence, Livermore Laboratory, 1980.
[13] ARNOLD W, HARTMANN T, ROTTENKOLBER E.Filling the Gap between Hypervelocity and Low Velocity Impacts[J]. International Journal of Impact Engineering, 2020, 139: 103531.
[14] 宋乙丹, 陈科全, 路中华, 等. 聚能射流冲击起爆屏蔽压装PBX炸药的试验研究[J]. 火炸药学报, 2019, 42(1): 69-72.
SONG Y D, CHEN K Q, LU Z H, et al.Experimental Research of the Impact Initiation of Shelled Pressed PBX Explosives by Shaped Charge Jet[J]. Chinese Journal of Explosives & Propellants, 2019, 42(1): 69-72.
[15] 陈思敏, 黄正祥, 贾鑫, 等. 射流冲击盖板覆盖下有限厚炸药的仿真和试验研究[J]. 含能材料, 2021, 29(2): 114-123.
CHEN S M, HUANG Z X, JIA X, et al.Simulation and Experimental Study of Jet Impact on Covered Finite-Thickness Explosive[J]. Chinese Journal of Energetic Materials, 2021, 29(2): 114-123.
[16] 蒋文灿, 傅丹, 梁斌, 等. 数值模拟研究屏蔽板厚度对杆式射流冲击屏蔽炸药过程的影响[J]. 弹箭与制导学报, 2023, 43(6): 8-13.
JIANG W C, FU D, LIANG B, et al.Numerical Investigation on the Initiation Mechanism of Covered Charge with Variable Thickness Shell Impacted by Rod Jet[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2023, 43(6): 8-13.
[17] 宋永彬, 陈思敏, 贾鑫, 等. 装药结构对引爆运动厚壳装药影响的仿真研究[J]. 兵器装备工程学报, 2022, 43(7): 254-259.
SONG Y B, CHEN S M, JIA X, et al.Simulation Study on Effect of Shaped Charge Structure on Initiation of Moving Thick Shell Charge[J]. Journal of Ordnance Equipment Engineering, 2022, 43(7): 254-259.
[18] 朱鹤荣, 陶钢. 关于射流引爆薄钢板覆盖炸药临界条件的实验测定和分析[J]. 兵工学报, 1992, 12(2): 10-15.
ZHU H R, TAO G.Experimental Measurement and Analysis on Critical Conditions of Jet Detonating Explosive Covered with Thin Steel Plate[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 1992, 12(2): 10-15.
[19] 黄正祥. 聚能装药理论与实践[M]. 北京: 北京理工大学出版社, 2014: 66-78.
HUANG Z X.Theory and Practice of Shaped Charge[M]. Beijing: Beijing Institute of Technology Press, 2014: 66-78.
[20] 童宗保, 王小春, 程剑, 等. 一种M型药型罩形成环形射流的数值模拟研究[J]. 兵器装备工程学报, 2016, 37(3): 143-145.
TONG Z B, WANG X C, CHENG J, et al.Study on Numerical Simulation of M Shaped Charged Liner Form Annular Jet[J]. Journal of Ordnance Equipment Engineering, 2016, 37(3): 143-145.
[21] 时党勇, 李裕春, 张胜民. 基于ANSYS/LS-DYNA 8.1进行显式动力分析[M]. 北京: 清华大学出版社, 2005: 295-296.
SHI D Y, LI Y C, ZHANG S M.Explicit Dynamic Analysis Based on ANSYS/LS-DYNA 8.1[M]. Beijing: Tsinghua University Press, 2005: 295-296.
[22] 辛春亮, 朱星宇, 薛再清, 等. 有限元分析常用材料参数手册[M]. 2版. 北京: 机械工业出版社, 2022.
XIN C L, ZHU X Y, XUE Z Q, et al.Handbook of Common Material Parameters for Finite Element Analysis[M]. 2nd ed. Beijing: China Machine Press, 2022.
[23] 马沛冉, 蔡宣明, 侯阳, 等. 三项式点火增长模型及各参量调控机理研究[J]. 中北大学学报(自然科学版), 2024, 45(3): 317-325.
MA P R, CAI X M, HOU Y, et al.Study on Trinomial Ignition Growth Model and Regulation Mechanism of Various Parameters[J]. Journal of North University of China (Natural Science Edition), 2024, 45(3): 317-325.
[24] 蒋文灿, 徐恒威, 梁斌, 等. 不同炸高和着角下聚能射流冲击厚壁PBX装药的起爆判定模型[J]. 北京理工大学学报, 2025, 45(11): 1137-1148.
JIANG W C, XU H W, LIANG B, et al.Initiation Criterion Model for Thick-Walled PBX Charges Subjected to Shaped Charge Jet Impacts at Different Standoff Distances and Oblique Angles[J]. Transactions of Beijing Institute of Technology, 2025, 45(11): 1137-1148.
[25] 杨丽, 陈闯, 张健, 等. 带隔板装药的杆式射流成型试验及侵彻特性分析[J]. 兵工学报, 2016, 37(4): 621-626.
YANG L, CHEN C, ZHANG J, et al.Analysis of Formation Experiment and Penetration Property of Rod-Like Jet of Shaped Charge with Foam[J]. Acta Armamentarii, 2016, 37(4): 621-626.