双层药型罩EFP战斗部性能参数的灰色系统理论分析及实验研究

通过LS-DYNA有限元软件计算得到不同装药结构的双层药型罩爆炸成型弹丸(EFP)战斗部成型侵彻体的特征参数,利用灰色系统理论分析了药型罩材料密度、曲率半径、厚度比以及装药密度、装药长径比(L/D)对成型侵彻体不同特征参数的影响规律。基于灰色系统理论分析结果设计了不同装药结构的双层药型罩EFP战斗部并进行了毁伤效应实验研究。实验结果表明当内外药型罩的厚度比为1.33时,双层药型罩EFP战斗部成型侵彻体的侵彻深度达到0.67倍装药口径,是具有相同装药结构EFP战斗部成型侵彻体侵彻深度的两倍左右;具有Cu-Cu或Cu-Fe药型罩组合方式的双层药型罩EFP战斗部成型侵彻体在侵彻深度方面的能力大致相当,但是Cu-Cu药型罩组合方式的战斗部成型侵彻体侵彻钢板的形状近似呈圆形。

Theoretical and Experimental Study on Performance Parameters of Double Layer Liners EFP Warhead Based on Grey System Theory

The characteristic parameters of double layer liners explosively formed penetrators(EFP)warhead with different charge structures were obtained by using LS-DYNA software. Liner material density, radius of liner curvature, liner thickness ratio and aspect ratio of L/D (the length/diameter) and density of charge were also investigated by the grey system theory. Based on the results,double layer liners EFP warhead with different structures were designed and penetration experiments were also carried out. Results show that double layer liners EFP warhead can effectively break down about 0.67 times of the charge diameter with the liner thickness ratio of 1.33, which is about twice penetration depth compared with EFP in the same shape charge structure. Penetration depth of Cu-Cu double layer liners warhead and Cu-Fe double layer liners warhead is at roughly the same level but perforation shape made by Cu-Cu double layer liners warhead is approximate in circle shape.