knowledge of professional and technical personnel Notice on the organization of advanced research class on high-pressure science and new materials of engineering
Volume 37 Issue 1
Feb 2023
Turn off MathJax
Article Contents
Chinese Journal of High Pressure Physics  > 2023  >  37(1): 015102.
XU Hengwei, LIANG Bin, LIU Junxin, LU Yonggang, OU Xiaohong. Effect of Initiation Eccentricity on Shaped Charge Jet Forming Process and Power Parameters[J]. Chinese Journal of High Pressure Physics, 2023, 37(1): 015102. doi: 10.11858/gywlxb.20220635
Citation: XU Hengwei, LIANG Bin, LIU Junxin, LU Yonggang, OU Xiaohong. Effect of Initiation Eccentricity on Shaped Charge Jet Forming Process and Power Parameters[J]. Chinese Journal of High Pressure Physics, 2023, 37(1): 015102. doi: 10.11858/gywlxb.20220635
shu

Effect of Initiation Eccentricity on Shaped Charge Jet Forming Process and Power Parameters

doi: 10.11858/gywlxb.20220635
  • 1.

    School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China

  • 2.

    Institute of Systems of Engineering, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

  • Received Date: 21 Jul 2022
  • Rev Recd Date: 18 Aug 2022
  • Accepted Date: 16 Jan 2023
    • Available Online: 28 Feb 2023
  • Issue Publish Date: 05 Feb 2023
    Abstract
  • In order to study the influence of off-axis initiation on shaped charge jet, the finite element software LS-DYNA was used to simulate the jet forming and armor breaking process under different eccentricities (0.025Dk–0.125Dk, Dk is shaped charge diameter). The asymmetric collapse degree of the liner, jet shape and lateral velocity were investigated. A theoretical model was established to analyze the lateral velocity distribution of jet under different eccentricities. Based on the orthogonal experimental design theory and analysis of variance, the significant difference of the influence degree of each factor on the evaluation index was discussed. The results show that the degree of asymmetric collapse and lateral velocity of jet are positively correlated with the offset. When the offset is 0.025Dk, the percentage of penetration depth was only 0.7%. However, when the eccentricity was 0.050Dk, the percentage of penetration depth suddenly jumped to 12.4%. Moreover, the penetration depth continues to decrease with the increase of offset, seriously affecting the jet’s penetration performance. In addition, the influence of off-axis initiation on jet lateral velocity can be compensated by increasing the thickness of liner and the explosive height above liner.

     

    • FullText(HTML)
  • loading
    • References(18)
  • [1]
    王钰婷, 黄正祥, 贾鑫, 等. 椭圆形截面聚能装药射流成型及侵彻特性 [J]. 含能材料, 2021, 29(2): 96–106. doi: 10.11943/CJEM2020276

    WANG Y T, HUANG Z X, JIA X, et al. Jet formation and penetration characteristics of shaped charge with elliptical cross-section [J]. Chinese Journal of Energetic Materials, 2021, 29(2): 96–106. doi: 10.11943/CJEM2020276
    [2]
    AYISIT O, CORUH M M. Investigation of off-axis initiation of long L/D hemispherical shaped charge warheads [J]. Procedia Engineering, 2013, 58: 487–495. doi: 10.1016/j.proeng.2013.05.056
    [3]
    李如江, 张晋红, 王建波, 等. 偏心起爆对聚能射流形成的影响 [J]. 弹箭与制导学报, 2012, 32(1): 85–88. doi: 10.3969/j.issn.1673-9728.2012.01.025

    LI R J, ZHANG J H, WANG J B, et al. The effect of eccentric initiation on shaped charge jet formation [J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2012, 32(1): 85–88. doi: 10.3969/j.issn.1673-9728.2012.01.025
    [4]
    AYISIT O. The influence of asymmetries in shaped charge performance [J]. International Journal of Impact Engineering, 2008, 35(12): 1399–1404. doi: 10.1016/j.ijimpeng.2008.07.027
    [5]
    刘健峰, 龙源, 纪冲, 等. 含偏心起爆对EFP战斗部飞行特性的影响 [J]. 爆炸与冲击, 2015, 35(3): 335–342. doi: 10.11883/1001-1455-(2015)03-0335-08

    LIU J F, LONG Y, JI C, et al. Effect of eccentric initiation on the flight characteristics and ballistic dispersion of EFP [J]. Explosion and Shock Waves, 2015, 35(3): 335–342. doi: 10.11883/1001-1455-(2015)03-0335-08
    [6]
    PACK D C, CURTIS J P. On the effect of asymmetries on the jet from a linear shaped charge [J]. Journal of Applied Physics, 1990, 67(11): 6701–6704. doi: 10.1063/1.345107
    [7]
    秦承森, 石艺娜, 冯其京, 等. 非对称射流形成的几何理论(一)——几何封闭条件 [J]. 爆炸与冲击, 2007, 27(6): 493–500. doi: 10.3321/j.issn:1001-1455.2007.06.003

    QIN C S, SHI Y N, FENG Q J, et al. The geometrical theory for the formation of asymmetric jet (Ⅰ): the geometrical close condition [J]. Explosion and Shock Waves, 2007, 27(6): 493–500. doi: 10.3321/j.issn:1001-1455.2007.06.003
    [8]
    BROWN J, SOFTLEY I D, EDWARDS P. Experimental study of shaped charges with built-in asymmetries [J]. Propellants, Explosives, Pyrotechnics, 1993, 18(5): 255–258. doi: 10.1002/prep.19930180504
    [9]
    BROWN J, CURTIS J P, COOK D D. The formation of jets from shaped charges in the presence of asymmetry [J]. Journal of Applied Physics, 1992, 72(6): 2136–2143. doi: 10.1063/1.352329
    [10]
    FEDOROV S V. Numerical simulation of the formation of shaped-charge jets from hemispherical liners of degressive thickness [J]. Combustion, Explosion, and Shock Waves, 2016, 52(5): 600–612. doi: 10.1134/S0010508216050117
    [11]
    贾伟, 吴国东, 王志军, 等. 制造误差对金属射流威力影响的仿真研究 [J]. 弹箭与制导学报, 2011, 31(4): 99–101, 132. doi: 10.3969/j.issn.1673-9728.2011.04.029

    JIA W, WU G D, WANG Z J, et al. Strength simulation study of metallic jet effected by technical errors [J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2011, 31(4): 99–101, 132. doi: 10.3969/j.issn.1673-9728.2011.04.029
    [12]
    刘建荣, 张国伟, 徐立新, 等. 药型罩加工精度对破甲战斗部威力影响的研究 [J]. 弹箭与制导学报, 2012, 32(3): 114–117. doi: 10.3969/j.issn.1673-9728.2012.03.032

    LIU J R, ZHANG G W, XU L X, et al. The research of influence of liner’s precision on the power of armor-penetrating warhead [J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2012, 32(3): 114–117. doi: 10.3969/j.issn.1673-9728.2012.03.032
    [13]
    PROSKURYAKOV E V, SOROKIN M V, FOMIN V M. Rebounding of a shaped-charge jet [J]. Journal of Applied Mechanics and Technical Physics, 2007, 48(5): 633–635. doi: 10.1007/s10808-007-0080-1
    [14]
    BROWN J, EDWARDS P J, LEE P R. Studies of shaped charges with built-in asymmetries. Part Ⅱ: modelling [J]. Propellants, Explosives, Pyrotechnics, 1996, 21(2): 59–63. doi: 10.1002/prep.19960210202
    [15]
    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.
    [16]
    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.

    HUANG Z X. Theory and practice of shaped charge [M]. Beijing: Beijing Institute of Technology Press, 2014.
    [17]
    侯秀成, 蒋建伟, 陈智刚. 有效射流结构模式的数值模拟 [J]. 爆炸与冲击, 2014, 34(1): 35–40. doi: 10.3969/j.issn.1001-1455.2014.01.007

    HOU X C, JIANG J W, CHEN Z G. Numerical simulation on structure modules of effective jet [J]. Explosion and Shock Waves, 2014, 34(1): 35–40. doi: 10.3969/j.issn.1001-1455.2014.01.007
    [18]
    李磊, 马宏昊, 沈兆武. 基于正交设计方法的双锥罩结构优化设计 [J]. 爆炸与冲击, 2013, 33(6): 567–573. doi: 10.3969/j.issn.1001-1455.2013.06.002

    LI L, MA H H, SHEN Z W. Optimal design of biconical liner structure based on orthogonal design method [J]. Explosion and Shock Waves, 2013, 33(6): 567–573. doi: 10.3969/j.issn.1001-1455.2013.06.002
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(16)  / Tables(6)

    Get Citation
    PDF
    XML

    Article Metrics

    Article views(182) PDF downloads(34) Cited by()
    Proportional views
    Related

    Copyright©《高压物理学报》编辑部

    Tel:0816-2490042 E-mail:gaoya@caep.cn

    Shu ICP, 11011126 -2

    Supported by: Beijing Renhe Information Technology Co. Ltd support: info@rhhz.net  

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return