Numerical simulation of the interlayer effects for fragments impacting steel-covered charge
-
摘要: 将战斗部简化为带钢壳和垫层的炸药组件，用3种不同厚度的材料作垫层，利用非线性有限元软件AUTODYN对高速破片侵彻、引爆带壳炸药的作用过程进行了数值模拟，得到了高速破片冲击起爆带壳带垫层炸药的波后压力剖面。对不同厚度多种材料作为垫层时带壳炸药的冲击到爆轰距离进行了对比分析，结果表明，通过控制垫层的材料和厚度，可以对破片冲击起爆带壳炸药进行有效抑制。研究结果对战斗部破片起爆的防护设计具有指导意义。Abstract: Non-linear dynamical finite element software AUTODYN was used to simulate the shock initiation of steel-covered charge impacted by high-velocity fragments. The interlayer effect was studied based on the pressure history of initiation when different materials and thickness interlayers were used. The results show that the interlayer material is an important factor affecting pressure history and run-to-detonation of explosives, the thickness of interlayer has the same effects. The initiation of explosives can be effectively prevented with changing the thickness and material of the interlayer.
-
Key words:
- interlayer /
- steel-covered charge /
- high-velocity flyer /
- shock initiation /
- non-linear dynamic
-
图 4 破片起爆过程中典型时刻炸药中的压力云图
Figure 4. Detonation pressure fields of fragment initiation at different time
图 5 不同厚度环氧树脂作为垫层时炸药中的波后压力剖面
Figure 5. Pressure history of explosives with different thicknesses epoxy interlayer
图 6 炸药的冲击到爆轰距离随硅橡胶垫层厚度的变化曲线
Figure 6. Run-to-detonation varied with the thickness of interlayer rubber
图 7 炸药的冲击到爆轰距离随不同材料垫层的变化曲线
Figure 7. Difference of run-to-detonation for the three interlayer materials
表 1 材料模型
Table 1. Material models
部件 材料 状态方程 强度模型 侵蚀模型 破片 steel 1006 Grüneisen Johnson-Cook plastic strain 壳体 steel 4340 Grüneisen Johnson-Cook plastic strain epoxy shock viscoelastic 垫层 polyethyl shock viscoelastic rubber shock viscoelastic 炸药 Comp.B ignition and growth Von mises 
下载: 导出CSV
-
[1] ZHANG X F, SHI A S, QIAO L, et al. Experimental study on impact-initiated characters of multifunctional energetic structural materials[J]. Journal of Applied Physics, 2013, 113(8):2129-1156. http://adsabs.harvard.edu/abs/2013JAP...113h3508Z [2] WANG H, ZHENG Y, YU Q, et al. Impact-induced initiation and energy release behavior of reactive materials[J]. Journal of Applied Physics, 2011, 110(7):239-H03. doi: 10.1063-1.3644974/ [3] LUO P, WANG Z, JIANG C, et al. Experimental study on impact-initiated characters of W/Zr energetic fragments[J]. Materials & Design, 2015, 84:72-78. https://www.researchgate.net/publication/282491321_Experimental_study_on_impact-initiated_characters_of_WZr_energetic_fragments [4] 洪建华, 陶江源.杀伤破片击穿和引爆靶弹的分析与研究[J].弹道学报, 2002, 14(4):60-66. doi: 10.3969/j.issn.1004-499X.2002.04.012HONG Jianhua, TAO Jiangyuan. Study of fragment penetrating and detonate target missile[J]. Journal of Ballistics, 2002, 14(4):60-66. doi: 10.3969/j.issn.1004-499X.2002.04.012 [5] COOK M D, HASKINS P J. Projectile impact initiation of a homogeneous explosive[J]. AIP Conference Proceedings, 1996, 370(1):823-826. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=CC027278004 [6] HASKINS P J, COOK M D. On delayed detonation(xdt)under fragment impact-An analysis of experimental data and a simple phenomenological model[C]//American Institute of Physics, 2009: 205-208. [7] MELOSH H J. High-velocity solid ejecta fragments from hypervelocity impacts[J]. International Journal of Impact Engineering, 1987, 5(1/2/3/4):483-492. https://linkinghub.elsevier.com/retrieve/pii/S0273117797008156 [8] COOK M D, HASKINS P J, JAMES H R. An investigation of the response of secondary explosives to conical-tipped projectiles and oblique impacts[C]//American Institute of Physics, 1994: 1421-1424. [9] 李小笠, 屈明, 路中华.三种破片对带壳炸药冲击起爆能力的数值分析[J].弹道学报, 2009, 21(4):72-75. http://d.old.wanfangdata.com.cn/Periodical/ddxb200904018LI Xiaoli, QU Ming, LU Zhonghua. Numerical simulation on the impact effect of three type fragments impacting steel-covered charge[J]. Journal of Ballistics, 2009, 21(4):72-75. http://d.old.wanfangdata.com.cn/Periodical/ddxb200904018 [10] 李旭锋, 李向东, 顾文彬, 等.含能破片引爆带壳炸药过程的数值模拟[J].爆炸与冲击, 2014, 34(2):202-208. http://www.bzycj.cn/CN/abstract/abstract8710.shtmlLI Xufeng, LI Xiangdong, GU Wenbin, et al. Numerical simulation on detonating shelled explosives by energetic fragments[J]. Explosion and Shock Waves, 2014, 34(2):202-208. http://www.bzycj.cn/CN/abstract/abstract8710.shtml [11] 宋浦, 梁安定.破片对柱壳装药的撞击毁伤试验研究[J].弹箭与制导学报, 2006, 26(1):87-88. doi: 10.3969/j.issn.1673-9728.2006.01.029SONG Pu, LIANG Anding. Experimental investigation on charges covered shell damaged fragments impact[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2006, 26(1):87-88. doi: 10.3969/j.issn.1673-9728.2006.01.029 [12] 王树山, 李朝君, 马晓飞, 等.钨合金破片对屏蔽装药撞击起爆的实验研究[J].兵工学报, 2001, 22(2):189-191. doi: 10.3321/j.issn:1000-1093.2001.02.012WANG Shushan, LI Chaojun, MA Xiaofei, et al. An experimental study on the initiation of covered charge impacted by tungsten alloy fragments[J]. Acta Armamentarii, 2001, 22(2):189-191. doi: 10.3321/j.issn:1000-1093.2001.02.012 [13] 张涛, 谷岩, 赵继波, 等.新型高能钝感炸药JBO-9X在较高冲击压力下冲击起爆过程的实验研究[J].火炸药学报, 2016, 39(1):28-33. http://d.old.wanfangdata.com.cn/Periodical/hzyxb201601005ZHANG Tao, GU Yan, ZHAO Jibo, et al. Experimental study on shock initiation process of a new insensitive high explosive JBO-9X under high impact pressure[J]. Chinese Journal of Explosives & Propellants, 2016, 39(1):28-33. http://d.old.wanfangdata.com.cn/Periodical/hzyxb201601005 [14] 张涛.激光干涉测速技术用于楔形炸药冲击起爆性能研究[D].四川绵阳: 中国工程物理研究院, 2016: 57-59. -
图(7) / 表(1)
计量
- 文章访问数: 4862
- HTML全文浏览量: 1200
- PDF下载量: 72
- 被引次数: 0