单点起爆形成多模式EFP的可行性研究

Feasibilityresearchontheformationofamultimodeexplosively formedpenetratorwithsingle-pointinitiation

摘要: 针对同一成型装药形成多模毁伤元问题,利用LS-DYNA 程序,研究了单点起爆位置对爆炸成型侵彻体(explosivelyformedpenetrator,EFP)成型的影响规律。当起爆点距离药型罩的轴向距离从0倍装药口径增加到0.72倍装药口径,EFP速度提高了37.8%,长径比增加了1倍多;优化设计成型装药结构,分析了主装药端面中心点起爆和药型罩顶点起爆爆轰波传播规律,实现了杆式EFP、EFP2种模态的转换。通过 X光成像实验进行了验证,实验结果与数值模拟结果吻合较好。
- 爆炸力学 /
- 多模式EFP /
- 单点起爆\成型装药\杆式EFP /
- 起爆位置
Abstract: Aimedatformingmultimodepenetratorswiththesameshapedcharge,theLS-DYNAsoftwarewasusedtoexploretheeffectsofthepointinitiationpositionontheformationofanexplosively formedpenetrator(EFP).Whentheaxisdistancebetweenthelinerandtheinitiationpointincreased from0to0.72timesaslongasthechargecaliber,theEFPvelocityincreased37.8percentandthe length-diameterratioincreasedover100percent.Thechargeshapewasoptimized.Thediffusionof thedetonationwaveswasanalyzed,whichwereformedbythecenterpointinitiationattheendofthe chargeandthepointinitiationofthelinerpeak,respectively.Andtheconversionoftherod-shaped EFPandEFPwasachieved.ThesimulatedresultsaccordwiththeX-rayimagingexperiments.
- mechanicsofexplosion /
- multimodeexplosivelyformedpenetrator(EFP) /
- single-pointinitiation /
- shapedcharge