带空腔装药结构射流成型数值模拟研究  

Numerical Simulation on Jet Formation of Shaped Charge with Air Cavity

作　　者：唐琦[1] 尹建平[1] 刘同鑫[2] 孙加肖 

机构地区：[1]中北大学机电工程学院,太原030051 [2]空军工程大学航天工程学院,西安710038

出　　处：《兵器装备工程学报》2016年第7期28-32,68,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金(11572291);中北大学第十二届研究生科技立项(20151209)

摘　　要：利用AUTODYN-2D非线性差分软件对有空腔装药结构的射流成型过程进行了数值模拟。分析研究了装药空腔顶部到装药端面距离h、装药空腔顶部直径d及装药空腔与药型罩接合处母线长度L三因素对射流成型的影响规律。在此基础上,应用正交设计针对3种因素对射流头部速度影响的主次关系进行了分析研究。结果表明:射流头部速度随着h值的增大而减小,随着d值增大而增大;当其他因素不变时,L存在最佳取值,L小于最佳值时射流头部速度随L值增加而增加,反之则会降低;装药空腔顶部直径是射流头部速度的主要影响因素;得到了3种因素的最优组合,最终结果比无空腔装药射流头部速度提高了19.1%。The AUTODYN-2D software was used to simulate formation of projectile. The influence law of the distance h between air cavity and the head surface of the charge,the diameter d of the top of the air cavity and the overlap length L of liner and air cavity were analyzed in this paper. On this basis, orthogonal design method was applied to analyze the primary and secondary relations of the three factors affecting the head velocity of jet. The results indicate that jet tip velocity decreases as d increases,while jet tip velocity increases as h decreases;and there is an optimum L when other factors are kept constant, jet tip velocity increases with L,but decreases when it is larger than this value;the diameter d of the top of the air cavity is the main influence factor,and the head velocity of the optimum combination is 19. 1%faster than the conventional shaped charge.

关 键 词：装药空腔 射流 数值模拟 正交优化 

分 类 号：TJ413[兵器科学与技术—火炮、自动武器与弹药工程]