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

LI Zhaoting; WANG Shuyou; SUN Shengjie; JIANG Jianwei; MEN Jianbing

doi:10.11883/bzycj-2024-0074

Article Contents

Article Navigation > Explosion And Shock Waves > 2024 >

LI Zhaoting, WANG Shuyou, SUN Shengjie, JIANG Jianwei, MEN Jianbing. Analysis of influencing factors on formationand penetration capabilitiesof asymmetric hollow annular shaped charge[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0074

Citation:

LI Zhaoting, WANG Shuyou, SUN Shengjie, JIANG Jianwei, MEN Jianbing. Analysis of influencing factors on formationand penetration capabilitiesof asymmetric hollow annular shaped charge[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0074

Citation:

LI Zhaoting, WANG Shuyou, SUN Shengjie, JIANG Jianwei, MEN Jianbing. Analysis of influencing factors on formationand penetration capabilitiesof asymmetric hollow annular shaped charge[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0074

PDF( 1255 KB)

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

doi: 10.11883/bzycj-2024-0074

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

Received Date: 2024-03-15
Rev Recd Date: 2024-05-13

Available Online: 2024-05-14

Abstract

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

FullText(HTML)

References(19)

References

[1]	刘鑫, 周亮. 串联战斗部研究现状及其发展 [J]. 国防科技, 2012, 33(6): 33–38. DOI: 10.3969/j.issn.1671-4547.2012.06.008. LIU X, ZHOU L. The status quo of the study and the development of the series-type warhead [J]. National Defense Science & Technology, 2012, 33(6): 33–38. DOI: 10.3969/j.issn.1671-4547.2012.06.008.
[2]	辛春亮, 龚苹, 曹君蓬, 等. 一种大开孔双药型罩聚能装药结构的数值模拟 [J]. 兵工学报, 2014, 35(S2): 203–206. XIN C L, GONG P, CAO J P, et al. Numerical simulation of a novel shaped charge with two liners [J]. Acta Armamentarii, 2014, 35(S2): 203–206.
[3]	任思远, 张庆明, 张晓伟, 等. 环形射流和中心爆炸成型弹丸组合战斗部对混凝土墙的破孔特性 [J]. 兵工学报, 2021, 42(8): 1569–1579. DOI: 10.3969/j.issn.1000-1093.2021.08.001. REN S Y, ZHANG Q M, ZHANG X W, et al. On the perforation characteristics of concrete wall induced by annular jet and central EFP combined warhead [J]. Acta Armamentarii, 2021, 42(8): 1569–1579. DOI: 10.3969/j.issn.1000-1093.2021.08.001.
[4]	LEIDEL D J. A design study of an annular-jet charge for explosive cutting [D]. Philadelphia: Drexel University, 1978: 47–64.
[5]	谭波, 刘宏杰, 苗润, 等. 不同装药形式环形聚能战斗部侵彻性能研究 [J]. 系统仿真学报, 2018, 30(12): 4808–4815. DOI: 10.16182/j.issn1004731x.joss.201812040. TAN B, LIU H J, MIAO R, et al. Penetrating capability of different annular shaped charge warhead [J]. Journal of System Simulation, 2018, 30(12): 4808–4815. DOI: 10.16182/j.issn1004731x.joss.201812040.
[6]	王成, 恽寿榕, 黄风雷. W型聚能装药射流形成及侵彻的实验和数值仿真研究 [J]. 兵工学报, 2003, 24(4): 451–454. DOI: 10.3321/j.issn:1000-1093.2003.04.005. WANG C, YUN S R, HUANG F L. An experimental study and numerical simulation on annular jet formation and penetration [J]. Acta Armamentarii, 2003, 24(4): 451–454. DOI: 10.3321/j.issn:1000-1093.2003.04.005.
[7]	徐文龙, 王成, 徐斌. 新型环形聚能射流形成机理研究 [J]. 北京理工大学学报, 2018, 38(6): 572–578. DOI: 10.15918/j.tbit1001-0645.2018.06.004. XU W L, WANG C, XU B. Investigation of new type annular shaped charge formation mechanism [J]. Transactions of Beijing Institute of Technology, 2018, 38(6): 572–578. DOI: 10.15918/j.tbit1001-0645.2018.06.004.
[8]	XU W L, WANG C, YUAN J M, et al. Effects of shell on bore center annular shaped charges formation and penetrating into steel targets [J]. Defence Science Journal, 2020, 70(1): 35–40. DOI: 10.14429/DSJ.70.14599.
[9]	XU W L, WANG C, CHEN D P. Formation of a bore-center annular shaped charge and its penetration into steel targets [J]. International Journal of Impact Engineering, 2019, 127: 122–134. DOI: 10.1016/j.ijimpeng.2019.01.008.
[10]	曹涛, 顾文彬, 刘建青, 等. 起爆点数量对侧向环形聚能装药侵彻能力的影响 [J]. 兵器装备工程学报, 2017, 38(12): 106–111. DOI: 10.11809/scbgxb2017.12.025. CAO T, GU W B, LIU J Q, et al. Effects of detonation points number on annular shaped charge penetration ability [J]. Journal of Ordnance Equipment Engineering, 2017, 38(12): 106–111. DOI: 10.11809/scbgxb2017.12.025.
[11]	曹涛, 顾文彬, 刘建青, 等. 药型罩形状对侧向环形射流性能的影响 [J]. 火工品, 2017(6): 14–18. DOI: 10.3969/j.issn.1003-1480.2017.06.004. CAO T, GU W B, LIU J Q, et al. The effects of liner’s shape on performance of lateral annularjet [J]. Initiators & Pyrotechnics, 2017(6): 14–18. DOI: 10.3969/j.issn.1003-1480.2017.06.004.
[12]	王伟力, 李永胜, 田传勇. 串联战斗部前级环形切割器的设计与试验 [J]. 火炸药学报, 2011, 34(2): 39–43. DOI: 10.3969/j.issn.1007-7812.2011.02.010. WANG W L, LI Y S, TIAN C Y. Optimization and test on front annular cutter of tandem warhead [J]. Chinese Journal of Explosives & Propellants, 2011, 34(2): 39–43. DOI: 10.3969/j.issn.1007-7812.2011.02.010.
[13]	段嘉庆, 王志军, 贾耀鲁, 等. 环形射流成型的设计改进及数值模拟 [J]. 弹箭与制导学报, 2013, 33(1): 103–106. DOI: 10.3969/j.issn.1673-9728.2013.01.028. DUAN J Q, WANG Z J, JIA Y L, et al. Design improvement and numerical simulation on annular jet formation [J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2013, 33(1): 103–106. DOI: 10.3969/j.issn.1673-9728.2013.01.028.
[14]	何降润, 展婷变, 付建平, 等. 聚能装药壳体对环形射流侵彻性能的影响 [J]. 弹箭与制导学报, 2020, 40(4): 123–128. DOI: 10.15892/j.cnki.djzdxb.2020.04.026. HE J R, ZHAN T B, FU J P, et al. Research on the shell to penetration performance of annular jet [J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2020, 40(4): 123–128. DOI: 10.15892/j.cnki.djzdxb.2020.04.026.
[15]	李永胜, 王伟力, 宋之勇. 抑制中心逆向侵彻体的异型环形装药设计 [J]. 火工品, 2015(5): 21–24. DOI: 10.3969/j.issn.1003-1480.2015.05.006. LI Y S, WANG W L, SONG Z Y. Design on special-shaped annular charge to weaken damage of center reverse projectile [J]. Initiators & Pyrotechnics, 2015(5): 21–24. DOI: 10.3969/j.issn.1003-1480.2015.05.006.
[16]	宋之勇, 王伟力, 李永胜, 等. 前级环形切割器对后端靶板影响的数值仿真 [J]. 海军航空工程学院学报, 2012, 27(6): 684–688. SONG Z Y, WANG W L, LI Y S, et al. Numerical simulation on the effect of annular cutter to following target [J]. Journal of Naval Aeronautical and Astronautical University, 2012, 27(6): 684–688.
[17]	傅磊, 王伟力, 宋之勇, 等. 串联战斗部前级环型聚能装药结构仿真研究 [J]. 计算机仿真, 2015, 32(10): 9–13, 18. DOI: 10.3969/j.issn.1006-9348.2015.10.003. FU L, WANG W L, SONG Z Y, et al. Simulation of forward annular shaped charge structure of tandem warhead [J]. Computer Simulation, 2015, 32(10): 9–13, 18. DOI: 10.3969/j.issn.1006-9348.2015.10.003.
[18]	徐文龙. 超聚能装药理论与应用研究 [D]. 北京: 北京理工大学, 2018: 129–132. DOI: 10.26948/d.cnki.gbjlu.2018.000215. XU W L. Research on theory and application of hyper shaped charge [D]. Beijing: Beijing Institute of Technology, 2018: 129–132. DOI: 10.26948/d.cnki.gbjlu.2018.000215.
[19]	程瑶, 刘晓蕾, 张晓东, 等. 典型立方体破片侵彻装甲钢的数值模拟研究 [J]. 兵器装备工程学报, 2022, 43(8): 106–111. DOI: 10.11809/bqzbgcxb2022.08.016. CHENG Y, LIU X L, ZHANG X D, et al. A numerical simulation study of typical cube fragments invading armored steel [J]. Journal of Ordnance Equipment Engineering, 2022, 43(8): 106–111. DOI: 10.11809/bqzbgcxb2022.08.016.