摘要
为研究装药半楔角度对无罩线形聚能装药近场爆炸载荷的影响,利用Autodyn有限元分析软件的二维多物质欧拉算法对不同半楔角(40°、50°、60°、65°和80°等)的线形聚能结构爆炸后冲击波的产生和传播过程进行了数值模拟。分析了冲击波的形成过程,得到了各装药爆炸后的近场不同位置(距离爆炸中心1.5、2.0、2.5和3.0m等)处冲击波超压及比冲量值,研究了半楔角和位置对爆炸载荷的影响。研究表明,无罩线形聚能装药结构的最优半楔角为65°左右,且距装药开口方向约2m处爆炸冲击波的综合作用能力最强。
To study the influence of half-wedge angle on the explosive blast load for non-coverd linear shaped charge,numerical simulations of the explosive balst forming and transmission of different non-coverd shaped charge structures （the half-wedge angle are 40,50,60,65,80°,etc） were carried out using the 2-D multi-material Euler method in Autodyn software.The forming process of the explosive blast was analyzed,and the overpressure and impulse value at different positions （1.5,2.0,2.5,3.0 m away from the detonation point） were obtained in the near-field of the blast flow field.The impact of half-wedge angle and position on the explosive blast load was presented.The study indicates that the best half-wedge angle of non-coverd shaped charge is 65°,and the explosive blast is most powerful at the position 2 m away from the detonation point.
出处
《解放军理工大学学报（自然科学版）》
EI
北大核心
2013年第5期530-534,共5页
Journal of PLA University of Science and Technology(Natural Science Edition)
关键词
线形聚能装药
半楔角
冲击波
爆炸载荷
linear shaped charge
half-wedge angle
shock wave
explosive loads
