Influence of Liner Curvature Radius on Parameters of Explosively Formed Penetrator (EFP)
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摘要:采用显式有限元程序对爆炸成型弹丸的形成过程进行了数值模拟，模拟的弹丸形状与高速摄影记录的结果非常相似。本文主要分析了EFP装药结构中药型罩曲率半径这一因素对所形成的弹丸参数的影响，结果显示，药型罩曲率半径对爆炸成型弹丸的外形、弹径和弹丸长度有着明显的影响。数值模拟技术可以指导爆炸成型弹丸战斗部的设计和分析，有助于研究EFP形成过程的研究，对进一步展开聚能装药的理论研究也具有一定的指导作用。
Abstract:This paper takes advantage of explicit finite element method to simulate the process of explosively formed penetrator (EFP) formation. The shape of simulated EFP is similar to the records of high-speed photography. We mainly analyzes influence of liner curvature radius on the parameters of EFP. The results show that liner curvature radius does have influence on the shapes of EFP and its diameter and length. The technology of numerical simulation is able to involve in design and analysis of EFP warhead. It would help to give useful insight into the unobservable part of the EFP formation process and validate the theory investigation of shaped charge.
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