爆炸与冲击2025，Vol.45Issue(1)：41-50,10.DOI:10.11883/bzycj-2024-0074
非对称中空环形聚能装药成型与侵彻特性影响因素分析
Analysis of influencing factors on formation and penetration capabilities of asymmetric hollow annular shaped charge
摘要
Abstract
The annular shaped charges serve as the precursor of a tandem warhead,prized for its ability to create large diameter perforation in targets.In an effort to enhance the penetration capacity of the annular shaped charge jet and mitigate the impact of the inner casing on subsequent sections induced by a reversed penetrator,a novel approach was taken to implement the investigation.Four different combinations of inner and outer casing materials based on steel and aluminum alloy were explored.It was found that when the inner casing was made of aluminum alloy,the average penetration depth in the rear target was 36.13％lower than that when the inner casing was made of steel.Selecting an inner casing of aluminum alloy and an outer casing of steel,the effects of tip offset,liner thickness,and standoff distance on the formation and penetration characteristics of the annular jet were further investigated.The results show that the jet formed by the non-eccentric liner exhibits radial offset,negatively influencing its penetration capability.However,by offsetting the liner tip to the outer side by 0.05d(where d represents the radial thickness of the annular shaped charge),both the forming and penetration performances of the jet are significantly improved.In addition,as the liner thickness increases,the velocity of the jet tip gradually decreases.Notably,the annular jet formed by an eccentric conical liner with a thickness of 0.045d exhibits superior penetration performance.Furthermore,the standoff distance emerges as a critical factor influencing the penetration capability of the annular jet.Optimal performance is achieved at a standoff distance of 1.12d.Under the same scenario,jet penetration tests were implemented.The difference between the radius of the penetration tunnel from numerical and experimental study lies within 12％.Subsequently,the reliability of the numerical simulation model and the conclusions are verified.关键词
环形聚能装药/偏心药型罩/射流成型/射流侵彻Key words
annular shaped charge/eccentric liner/jet formation/jet penetration分类
力学引用本文复制引用
李召婷,王树有,孙圣杰,蒋建伟,门建兵..非对称中空环形聚能装药成型与侵彻特性影响因素分析[J].爆炸与冲击,2025,45(1):41-50,10.基金项目
爆炸科学与安全防护全国重点实验室(北京理工大学)自主研究课题(YBKT23-09) （北京理工大学）
