药型罩结构对环形向内切割器切割能力的影响

Influence of Liner Structure on Cutting Ability of Annular Inward Cutter

摘要

环形向内聚能切割器针对管状和柱状的目标有良好的切割能力,为探究锥顶形药型罩、弧顶形药型罩和截顶形药型罩3种药型罩结构对环形向内聚能切割器切割威力的影响,通过改变药型罩的截顶高度设计出不同工况的仿真方案;采用LS-DYNA对每一组仿真方案进行数值模拟,得出截顶高度对3种药型罩结构的侵彻威力影响规律;通过改变起爆点位置讨论起爆偏移对其威力的影响,得出相应的结果。结果表明:高截顶时,罩顶结构对环形向内聚能切割器的侵彻威力影响较小;低截顶时,罩顶结构对截顶形药型罩的侵彻威力影响程度较大,对弧顶形药型罩的侵彻威力影响较小;药形罩的截顶高度与环形向内聚能切割器的最大侵彻深度呈正比关系,与最大切口宽度呈反比关系;单考虑最大侵彻深度,截顶高度为34mm的截顶形药型罩为最优,较锥顶形药型罩提高了8.17%,单考虑最大切口宽度,截顶高度为24mm和22mm的截顶型药型罩结构为最优,其值提高了108.42%;当起爆发生偏移时,弧顶形药型罩结构的抗干扰能力明显优于锥顶形药型罩和截顶形药型罩,其侵彻效果更好,综合考虑侵彻威力及抗干扰因素,选择弧顶形药型罩为最优。该研究可以为环形向内切割器的结构设计提供一定的理论基础。

Abstract

The circular shaped charge (CSC) of cutting inward has good cutting power for both tubular and cylindrical targets. In order to explore the effects of three-types of liners, namely conical top liner, arc top liner and truncated top liner, on the CSC of cutting inward, the simulation scheme of different working conditions was designed by changing the truncated height of the liner. LS-DYNA was used to numerically simulate each set of simulation schemes, and the influence of the truncated height on the penetration power of the three types of liner structures was obtained. By changing the detonation point, the influence of the initiation offset on its power was discussed, and the corresponding results were obtained. The results show that when the truncation is high, the top structure has little effect on the penetration power of CSC of cutting inward. When the truncation is low, the top structure has greater effect on the penetration power of truncated top liner, and has little influence on the penetration power of arc top liner. The truncated height of the liner is directly proportional to the maximum penetration depth of CSC of cutting inward, and inversely proportional to the maximum incision width. Considering the maximum penetration depth, the truncated top liner with truncated height of 34mm is the best, which is 8.17% higher than that of conical top liner. Considering the maximum incision width, the structure of the truncated top liner with a truncated height of 24mm and 22mm is the best, and its value is increased by 108.42%. When the eruption is offset, the anti-interference ability of the arc top liner is obviously better than that of conical top liner and truncated top liner, and its penetration effect is better. Considering the penetrating power and anti-interference factors, the arc top liner is selected as the best. The research in this paper can provide theoretical basis for the structural design of CSC of cutting inward.

关键词

聚能切割器 / 聚能侵彻体 / 侵彻深度 / 有限元模拟

Key words

linear shaped energy cutter / shaped energy penetrator / penetration depth / finite element simulation

参考文献

[1] 武双章, 顾文彬, 李裕春, 等. 环形向内切割聚能装药射流成型性能研究[J]. 含能材料, 2017, 25(11): 896-902.

[2] WU Shuangzhang, GU Wenbin, LI Yuchun, et al. Jet formation performance of circular shaped charge of cutting inward [J]. Chinese Journal of Energetic Materials, 2017, 25(11): 896-902. (in Chinese)

[3] 郑建礼. 深井内聚能爆破切除井管[J]. 江西水利科技, 1991(4): 347-348, 351.

[4] ZHENG Jianli. Deep well cohesion blasting cuts well pipes [J]. Jiangxi Hydraulic Science & Technology, 1991(4): 347-348, 351. (in Chinese)

[5] 李晓杰, 江德安, 闫鸿浩, 等. 大型聚能切割器对浅海废弃油井的爆破拆除[J]. 辽宁工程技术大学学报(自然科学版), 2008(S1): 136-138.

[6] LI Xiaojie, JIANG Dean, YAN Honghao, et al. Blasting demolition of oil well discarded by larger linear cumulative cutter in shallow sea [J]. Journal of Liaoning Technical University (Natural Science), 2008(S1): 136-138. (in Chinese)

[7] 吴鸿雁. 聚能切割在钢结构建筑拆除中的应用研究[J]. 合肥师范学院学报, 2010, 28(3): 58-60,75.

[8] WU Hongyan. Research on application of shaped charge cutting to demolition of steel structured building [J]. Journal of Hefei Normal University, 2010, 28(3): 58-60, 75. (in Chinese)

[9] 王成, 宁建国, 卢捷. 环形射流形成及侵彻的数值方法研究[J]. 北京大学学报(自然科学版), 2003, 39(3): 316-321.

[10] WANG Cheng, NING Jianguo, LU Jie. Study on numerical simulation of the annular jet formation and penetration [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2003, 39(3): 316-321. (in Chinese)

[11] 王尹军, 颜事龙, 胡坤伦. 线型聚能装药的圆型罩和楔型罩之比较[J]. 煤矿爆破, 2001, 55(4): 3-6.

[12] WANG Yinjun, YAN Shilong, HU Kunlun. Comparison of round and wedge hoods for linear shaped charges [J]. Coal Mine Blasting, 2001, 55(4): 3-6. (in Chinese)

[13] LIM S. Steady state equation of motion of a linear shaped charges liner [J]. International Journal of Impact Engineering, 2012, 44: 10-16.

[14] 杜学良. 罩顶角对聚能切割器切割深度影响的数值模拟[J]. 科技信息, 2012(6): 135-136.

[15] DU Xueliang. Numerical simulation of the effect of the top angle of the hood on the cutting depth of the shaped cutter [J]. Science & Technology Information, 2012(6): 135-136. (in Chinese)

[16] 龚文涛, 刘健峰, 龚先乐, 等. 线型聚能切割器结构参数优化设计及应用[J]. 爆破器材, 2017, 46(6): 37-42.

[17] GONG Wentao, LIU Jianfeng, GONG Xianle, et al. Structural parameter optimization and application of the linear shaped charge cutter [J]. Explosive Materials, 2017, 46(6): 37-42. (in Chinese)

[18] 杨乐, 张亚. 柱-锥结合线型药型罩射流特性的数值模拟[J]. 工程爆破, 2018, 24(5): 28-34.

[19] YANG Le, ZHANG Ya. Numerical simulation of jet characteristics of cylindrical-cone combined with linear liner [J]. Engineering Blasting, 2018, 24(5): 28-34. (in Chinese)

[20] SHU Y, SHAO P, LI Z, et al. Linear hypercumulation formation mechanism for π-type shaped charge [J]. Propellants, Explosives, Pyrotechnics, 2022, 47(3): e202100162.

[21] CHENG X, HUANG G, LIU C, et al. Design of a novel linear shaped charge and factors influencing its penetration performance [J]. Applied Sciences, 2018, 8(10): 1863.

[22] 刘岩, 龙仁荣, 张庆明, 等. 钨合金杆在线型聚能射流作用下变形断裂的机制及其特性[J]. 兵工学报, 2020, 41(S2): 135-143.

[23] LIU Yan, LONG Renrong, ZHANG Qingming, et al. Deformation and fracture mechanisms and characteristics of long tungsten alloy rod under the impact of linear shaped jet [J]. Acta Armamentarii, 2020, 41(S2): 135-143. (in Chinese)

[24] 张晋红, 李如江, 刘天生. 环形及线形聚能装药侵彻体对长杆式穿甲弹穿甲过程干扰的试验和数值模拟[J]. 兵工学报, 2018, 39(7): 1372-1378.

[25] ZHANG Jinhong, LI Rujiang, LIU Tiansheng. Test and numerical simulation for annular and linear shaped charge projectiles interfering the penetrating process of long rod penetrators [J]. Acta Armamentarii, 2018, 39(7): 1372-1378. (in Chinese)

[26] 孙瑞泽. 截顶组合式环形装药结构设计与优化[J]. 兵器材料科学与工程, 2022, 45(6): 51-56.

[27] SUN Ruize. Structural design and optimization of truncated composite annular charge [J]. Ordnance Material Science and Engineering, 2022, 45(6): 51-56. (in Chinese)

[28] WU S Z. Jet penetration effect of an inward-cutting circular shaped charge with different number of detonation points [J]. Combustion Explosion and Shock Waves, 2019, 55(6): 750-758.

[29] 辛春亮, 薛再清, 涂建, 等 . 有限元分析常用材料手册[M]. 北京: 机械工业出版社, 2019.

[30] 孔繁家, 周春桂, 王志军, 等. 罩顶材料对双锥药型罩成型及侵彻性能的影响[J]. 兵器材料科学与工程, 2021, 44(6): 30-35.

[31] KONG Fanjia, ZHOU Chungui, WANG Zhijun, et al. Influence of top material on forming and penetration performance of double cone type charge [J]. Ordnance Material Science and Engineering, 2021, 44(6): 30-35. (in Chinese)

[32] 南宇翔, 蒋建伟. 子弹药落地冲击响应数值模拟及实验验证[J]. 振动与冲击, 2013, 32(3): 182-187.

[33] NAN Yuxiang, JIANG Jianwei. Numerical simulation and test for impact response of submunitions drop [J]. Journal of Vibration and Shock, 2013, 32(3): 182-187. (in Chinese)

[34] 李中泽, 高旭东. 玻璃纤维复合装甲抗射流侵彻的性能研究[J]. 兵器装备工程学报, 2021, 42(9): 126-131.

[35] LI Zhongze, GAO Xudong. Performance of glass fiber composite armor against shaped charge jet [J]. Journal of Ordnance Equipment Engineering, 2021, 42(9): 126-131. (in Chinese)

基金资助

高能效装备制造技术创新中心基金(012024006)

山西省基础研究计划(202403021221125)

河南省高等学校重点科研项目计划(25B590001)