-
摘要: 为了了解理想刚性弹丸的高速/超高速动能侵彻中弹体头部形状对侵彻能力的影响，在空腔膨胀理论基础上，基于双卵形异型头部设计，分析了头部形状系数与双卵形特征参数的依赖关系，得到了不同异型头部弹体对侵彻性能的影响规律，提出了具有较小侵彻阻力的异型头部侵彻体设计方案。与不同头部侵彻实验结果对比表明，本文的分析方法合理可行，可为高速侵彻体头部形状设计提供参考。Abstract: Nose shape of projectiles is an important factor influencing the penetration ability. For high speed/ultra high speed kinetic energy penetration of ideal rigid projectiles, this factor is becoming more serious. Based on the classical cavity expansion theory and designing scheme of double-ogival nose, this paper analyses the relationship between nose shape factor and the characteristic parameters of double ogive, and obtains the influence of modified nose projectiles on the penetration performance. It puts forward the design scheme of modified nose penetration body with smaller penetration resistance. The comparison among the results of nose penetration test, proves that this analysis and method are reasonable and feasible, and can be used in judgement for the design of high speed penetrator nose shape.
-
图 2 改进后的弹体与原弹体对比图
Figure 2. The contrast between modified projectile and original projectile
图 3 φ=3、异型弹体和φ=5弹体的头部形状系数
Figure 3. Relation between N* and nose position of φ=3, modified and φ=5 projectiles
图 5 φ=3、异型头部和φ=5的弹体示意图
Figure 5. Dimension figure of φ=3, modified nose and φ=5 projectiles
图 8 两种弹体在不同速度下的量纲一侵深
Figure 8. Non-dimensional penetration depth of OP2 and OP5 at the initial velocities
图 9 4种头部弹体的量纲一侵深随初速度的变化
Figure 9. Non-dimensional penetration depth of OP2, OP5, same sized OP3 and modified nose projectile versus different initial velocity
表 1 弹体特征参数和侵彻结果
Table 1. Characteristic parameters and penetration results of projectiles
弹体 Dp/mm Lp/mm N* φ mp/kg Lc/mm v/(m·s-1) P/mm ΔP/mm ΔP/Dp OP2-1 40 212.92 0.156 3 2.00 1.406 98.26 431 384 - - OP5-1 40 242.93 0.071 2 4.55 1.410 110.35 419 426 42 1.05 OP2-2 40 212.91 0.156 3 2.00 1.400 98.22 608 686 - - OP5-2 40 242.91 0.071 2 4.55 1.402 109.75 608 738 52 1.30 OP2-3 40 212.88 0.156 3 2.00 1.394 99.13 768 957 - - OP5-3 40 242.93 0.071 2 4.55 1.408 110.05 780 1 019 62 1.55 
下载: 导出CSV
-
[1] Forrestal M J, Frew D J, Hanchak S J, et al. Penetration of grout and concrete targets with ogive-nose steel projectiles[J]. International Journal of Impact Engineering, 1996, 18(5): 465-476. doi: 10.1016/0734-743X(95)00048-F [2] Forrestal M J, Altman B S, Cargile J D, et al. An empirical equation for penetration depth of ogive-nose projectiles into concrete targets[J]. International Journal of Impact Engineering, 1994, 15(4): 395-405. doi: 10.1016/0734-743X(94)80024-4 [3] Jones S E, Rule W K, Jerome D M, et al. On the optimal nose geometry for a rigid penetrator[J]. Computational Mechanics, 1998, 22(5): 413-417. doi: 10.1007/s004660050373 [4] Chen X W, Li Q M. Deep penetration of a non-deformable projectile with different geometrical characteristics[J]. International Journal of Impact Engineering, 2002, 27(6): 619-637. doi: 10.1016/S0734-743X(02)00005-2 [5] Zhao J, Chen X W, Jin F N, et al. Depth of penetration of high-speed penetrator with including the effect of mass abrasion[J]. International Journal of Impact Engineering, 2010, 37(9): 971-979. doi: 10.1016/j.ijimpeng.2010.03.008 [6] Batra R C, Chen X. Effect of frictional force and nose shape on axisymmetric deformation of a thick thermoviscoplastic target[J]. Acta Mechanica, 1994, 106(1/2): 87-105. [7] 皮爱国.大长细比动能弹体结构动态响应研究[D].北京: 北京理工大学, 2007. [8] Bishop R F, Hill R, Mott N F. The theory of indentation and hardness tests[J]. Proceedings of the Physical Society, 1945, 57(3): 147-159. doi: 10.1088/0959-5309/57/3/301 [9] Hill R. Cavitation and the influence of headshape in attack of thick targets by non-deforming projectiles[J]. Journal of the Mechanics and Physics of Solids, 1980, 28(5): 249-263. [10] Forrestal M J, Luk V K. Dynamic spherical cavity-expansion in a compressible elastic-plastic solid[J]. Journal of Applied Mechanics, 1988, 55(2): 275-279. doi: 10.1115/1.3173672 [11] Walker J D, Anderson C E. A time-dependent model for long-rod penetration[J]. International Journal of Impact Engineering, 1995, 16(1): 19-48. doi: 10.1016/0734-743X(94)00032-R [12] Goldsmith W. Non-ideal projectile impact on targets[J]. International Journal of Impact Engineering, 1999, 22(2): 95-395. [13] 柴传国.异型头部弹体对混凝土靶的侵彻效应研究[D].北京: 北京理工大学, 2014. 期刊类型引用(12)
1. 李宇峰，申宏栋. 管内合成气爆炸压力特性的试验与机理研究. 安全与环境学报. 2024(04): 1362-1370 . 
百度学术2. 温小萍，张思雨，张素梅，郭志东. 燃烧诱导快速相变研究综述. 安全与环境学报. 2023(08): 2636-2643 . 百度学术3. 李静野，蒋新生，余彬彬，王春辉，王子拓. 大尺度开敞空间油料蒸气云爆炸超压与火焰传播机制研究. 爆炸与冲击. 2022(03): 160-175 . 
本站查看4. 刘冲，杜扬，梁建军，张培理，孟红. 含双侧分支受限空间油气爆炸火焰行为与超压特性大涡模拟. 爆炸与冲击. 2020(06): 86-95 . 本站查看5. 王亚军，蒋曙光，王磊，邵昊，吴征艳，王凯. 含弱约束结构受限空间甲烷爆炸及传播特征实验研究. 煤炭学报. 2019(02): 502-508 . 百度学术6. 温小萍，苏腾飞，王发辉，邓浩鑫，刘志超. 置障条件下含氢瓦斯爆炸特性试验. 安全与环境学报. 2019(02): 481-487 . 百度学术7. 李乾，冯梦梦，马力，王玉杰，陈先锋，何松. 不同泄压条件对方管内爆炸压力特性的影响. 爆炸与冲击. 2019(07): 32-38 . 本站查看8. 王世茂，杜扬，李国庆，齐圣，韦世豪，李蒙. 开口率和点火源类型对汽油蒸气泄压爆炸内场超压荷载的影响. 化工进展. 2018(01): 23-31 . 百度学术9. 欧益宏，李润，袁广强，李国庆，王世茂. 置障条件下半密闭空间油气爆炸特性实验与数值模拟. 化工学报. 2017(11): 4437-4444 . 百度学术10. 王世茂，杜扬，梁建军，周艳杰，李国庆，齐圣. 破坏压力对含有弱顶面受限空间内油气爆燃超压荷载的影响. 化工学报. 2017(12): 4865-4873 . 百度学术11. 韦世豪，杜扬，王世茂，李国庆，齐圣，李蒙. 储油条件下拱顶油罐的油气爆炸实验. 中国安全生产科学技术. 2017(09): 152-157 . 百度学术12. 李蒙，杜扬，李国庆，齐圣，王世茂，韦世豪. 油气浓度对半开口管道爆炸超压特性与火焰行为的影响. 中国安全生产科学技术. 2017(10): 174-180 . 百度学术其他类型引用(4)
-
百度学术
计量
- 文章访问数: 3856
- HTML全文浏览量: 295
- PDF下载量: 596
- 被引次数: 16