王德宝,马宏昊,沈兆武,陈伟,曲忠伟
WANG De-bao,MA Hong-hao,SHEN Zhao-wu,CHEN Wei,QU Zhong-wei

• 1:中国科学技术大学近代力学系
• 2:安徽理工大学理学院

摘要(Abstract)：

ANSYS/LS-DYNA对平顶药型罩的射流形成过程进行数值模拟,结果表明,在顶点起爆条件下,平顶药型罩的平顶中心首先下凹并拉动药型罩边壁向内汇聚,使得存在夹角的平顶与边壁整体构成环形线性聚能罩,此聚能罩在炸药爆轰作用下产生一级射流,一级射流彼此作用继而产生更高速度的二级射流。分析认为其机理是二级药型罩成型假说,尝试探索研究多级射流领域,并为提高射流速度提供一种新思路。
Jet formation of flat-top liner was numerically simulated by the software ANSYS/LS-DYNA.The results showed that the ceiling of flat-top liner was concaved by explosive effect,then the whole liner wall was pushed inside to form an annulus linear shaped charge cover because of the angle between liner ceiling and liner wall.The primary jet was produced by the annulus liner under the action of explosive detonation.Primary jet collided with each other in the central axis to form the second level jet with higher velocity.The formation process of second-level jet could be explained by the second level liner hypothesis.The new idea about how to improve the jet velocity was given to try to explore the multi-level jet field.

关键词(KeyWords)： 聚能射流;平顶药型罩;数值模拟;理论分析;二级射流
Shaped charge jet;Flat-top liner;Numerical simulation;Theory analysis;Second level jet

Abstract:

Keywords:

基金项目(Foundation): 储氢型动态敏化复合乳化炸药爆轰机理和安全性研究(项目批准号:51374189)

作者(Author): 王德宝,马宏昊,沈兆武,陈伟,曲忠伟
WANG De-bao,MA Hong-hao,SHEN Zhao-wu,CHEN Wei,QU Zhong-wei

参考文献(References)：

• [1]李磊.多面聚能效应的数值模拟与应用研究[D].合肥:中国科学技术大学,2013.LI Lei.Numerical simulation and application of multidimensional shaped charge effect[D].Hefei:University of Science and Technology of China,2013.
• [2]马建福.聚能装药结构对混凝土侵彻作用研究[D].太原:中北大学,2007.MA Jian-fu.Study on the mechanism of penetrating into concrete using shaped charge structures[D].Taiyuan:North University of China,2007.
• [3]张雷雷,朱鸿瑞,黄风雷.大锥角药型罩聚能装药结构对混凝土介质侵彻研究[J].弹箭与制导学报,2007,27(3):134-136.ZHANG Lei-lei,ZHU Hong-rui,HUANG Feng-lei.Shaped charge with large cone angle penetration to concrete target[J].Journal of Projectiles,Rockets,Missiles and Guidance,2007,27(3):134-136.
• [4]刘波,姚志敏.聚能破甲战斗部药型罩不同形状锥顶对射流影响的数值模拟[J].机械设计与研究,2014,30(4):78-81.LIU Bo,YAO Zhi-min.The numerical simulation for conical liners with different shape tops of shaped charge warhead impacting on the jets[J].Machine Design and Research,2014,30(4):78-81.
• [5]王成,付晓磊,宁建国.起爆方式对聚能射流性能影响的数值分析[J].北京理工大学学报,2006,26(5):401-404.WANG Cheng,FU Xiao-lei,NING Jian-guo.Numerical simulation of shaped charge jet formation under different ways of initiation[J].Transactions of Beijing Institute of Technology,2006,26(5):401-404.
• [6]焦丽娟,刘天生.关于楔形罩的初步研究[J].华北工学院学报,2001,22(1):70-74.JIAO Li-juan,LIU Tian-sheng.Preliminary study on the cuneiform charge liner[J].Journal of North China Institute of Technology,2001,22(1):70-74.
• [7]董永香,陈国光,辛长范,等.一种新型装药结构的探讨[J].华北工学院学报,1999,20(3):233-235.DONG Yong-xiang,CHEN Guo-guang,XIN Changfan,et al.Analysis on the structure of a new type of shaped charge[J].North China Institute of Technology,1999,20(3):233-235.
• [8]徐景林,顾文彬,武双章,等.带隔板线型聚能装药侵彻能力的正交优化[J].工程爆破,2016,22(1):77-81.XU Jing-lin,GU Wen-bin,WU Shuang-zhang,et al.Orthogonal optimization of penetration ability of linear shaped charge with wave-shaper[J].Engineering Blasting,2016,22(1):77-81.