By changing hollow diameter of cylindrical charge with one end initiation, detonation output characteristics and its influence on driving characteristics of discrete rod was studied. Numerical simulation of the detonation driving rods process was carried out with the nonlinear dynamic analysis program LS-DYNA and hydro-solid coupling method. The influence of different hollow diameter on pressure distribution of detonation product, velocity, micro-unit velocity distribution and effective length of discrete rod was analyzed. With the increase of hollow diameter, strong sparse effect makes the pressure along the axial direction gradually the same. Resultant velocity of discrete rod decreases nonlinearly with hollow diameter increasing and micro-unit velocity gradient decreases. As hollow diameter increasing, the flatness of rod becomes better, whereas the flatness shows a reverse variation to the velocity of rod. The optimal effect of discrete rod should consider its velocity and flatness synthetically.
魏继锋，魏锦. 端部起爆下空腔装药对离散杆驱动特性的影响研究[J]. 振动与冲击, 2015, 34(17): 58-62.
WEI Ji-feng WEI Jin. Study on driving characteristics of discrete rod by hollow cylindrical charge with one end initiation. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(17): 58-62.
[1] 姚翠友, 娄春兰, 陈放, 等. 离散杆战斗部中隔板形状研究[J]. 北京理工大学学报, 1999, 19(S1): 61-64.
YAO Cui-you, LOU Chun-lan, ChEN Fang. Study on the shape of linear in the discrete warhead[J]. Journal of Beijing Institute of Technology, 1999, 19(S1):61-64.
[2] 郭华, 王树山, 马峰. 空腔装药爆轰驱动的三维数值模拟[J]. 弹箭与制导学报, 2004, 24(4): 305-307.
GUO Hua, WANG Shu-shan, MA feng. Three-dimensions numerical simulation on the explosive driving of the hollow-charge[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2004, 24(4): 305-307.
[3] ZHANG Zhi-wei, WANG Shu-shan, MA Feng. Gurney equation of the hollow-charge[J]. Theory and Practice of Energetic Materials, 2005, 6: 1117-1120.
[4] WANG Shu-shan, LI Chuan-zeng. KE-Rod initial velocity of hollow cylindrical charge[J]. Defence Science Journal, 2011, 61(1):25-29.
[5] 梁争峰, 程淑杰, 郭双锋, 等. 爆轰场强对杆条姿态影响的数值模拟及试验[J]. 火炸药学报, 2011, 34(2): 52-55.
LIANG Zheng-feng, CHENG Shu-jie, GUO Shuang-feng, et al. Numerical simulation and test on effects of explosive field intensity on rod attitude[J]. Chinese Journal of Explosives & Propellants, 2011, 34(2): 52-55.
[6] WEI Ji-feng, LI Yuan, WANG Shu-shan. Study on driving characteristics of discrete rod by different initiation styles[J]. Applied Mechanics and Materials, 2012, 128-129: 318-322.
[7] 毛亮, 姜春兰, 严翰新, 等. 可瞄准预制破片战斗部数值模拟与试验研究[J]. 振动与冲击, 2012, 31(13): 66-70.
MAO Liang, JIANG Chun-lan, YAN Han-xin, et al. Numerical simulation and experiment on amiable warhead of premade fragment[J]. Journal of Vibration and Shock, 2012, 31(13): 66-70.
[8] 孔祥韶, 吴卫国, 李晓彬, 等. 圆柱形战斗部破片速度及等效装药特性研究[J]. 振动与冲击, 2013, 32(9): 146-149.
KONG Xiang-shao, WU Wei-guo, LI Xiao-bin, et al. Fragment velocity and equivalent bare charge characteristic of cylindrical warhead[J]. Journal of Vibration and Shock, 2013, 32(9): 146-149.
[9] Sing M, Suneja H R, Bola M S, et al Dynamic tensile deformation and fracture of metal cylinders at high strain rates[J]. International Journal of Impact Engineering, 2002, 27: 939-954.
[10] 张宝平, 张庆明, 黄风雷. 爆轰物理学[M]. 北京: 兵器工业出版社, 2006.
[11] 张国伟. 终点效应及靶场试验[M]. 北京: 北京理工大学出版社, 2009.
