Formationofincisedmultipleexplosively-formedprojectilesand theirarmor-piercingeffectagainststeeltarge
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摘要: 基于60mm 弧锥结合罩EFP装药,设计了一种在药型罩前适当位置安装可抛掷的十字形网栅的 切割式多爆炸成形弹丸战斗部结构,并进行了靶场静爆实验。由实验结果可知,该战斗部经网栅切割后能形 成5枚具有一定质量和方向性、可贯穿6mm 厚45钢靶的弹丸,有效提高了毁伤元的数量和毁伤面积。利用 LS-DYNA程序对弹丸侵彻45钢靶过程进行了数值模拟,分析了弹丸侵彻钢靶过程。通过对中心弹丸穿靶 模拟数据的处理,得到了其余尺寸弹丸侵彻不同厚度45钢靶的极限穿透速度计算公式,该公式可对相关切割 式多爆炸成形弹丸战斗部威力优化设计和评估提供依据。
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关键词:
- 爆炸力学 /
- 侵彻 /
- 切割网栅 /
- 多爆炸成形弹丸战斗部
Abstract: Basedonthe60-mm-diameterexplosively-formedprojectile(EFP)warheadwithanarc-cone liner,amultipleexplosively-formedprojectile(MEFP)warheadwasdesignedbyfixinganejectable cross-shapedreseauinaproperplaceinfrontofthelinerasthecuttingdevice.Andthearmor-piercing effectofthedesignedMEFPwarheadwasinvestigatedbycarryingoutstatic-explosiontests.Theresultsindicatethatthedesignedwarheadcanbecutinto5EFPswhichhaveacertainmassanddirection, andcanpenetratethrougha6-mm-thick45steeltarget.Itiseffectivetoincreasedamageelementsanddamagearea. TheprocessoftheMEFPspenetratingthroughthe45steeltargetswasnumericallyanalyzedbyusingLS- DYNA3D.TheballisticlimitingvelocityformulaoftheEFPswith differentsizesandstructureswereobtainedbyprocessingthesimulateddataofthecenterEFPpenetratingthroughthe45steeltarget-
Key words:
- mechanicsofexplosion /
- penetration /
- incisivecover /
- MEFPwarhead
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