药型罩结构参数对侵彻体成型的影响

Effect of Liner Configuration Parameter on Formation of Penetrator

以弧锥结合罩型聚能装药为计算模型,应用显式有限元程序LS-DYNA计算分析了药型罩的罩高、锥高比例对侵彻体长度、长径比、头部直径及头部速度的影响规律。结果表明:随着罩高的增大,侵彻体的长度、长径比逐渐增大,头部直径逐渐减小,头部速度则先减小后增大;对于药型罩罩高大于0.15倍装药口径的装药结构,随着锥高比例的增大,侵彻体的长度、长径比及头部速度都逐渐增大,头部直径逐渐减小。试验验证表明,数值模拟得到的规律与试验结果符合较好。

By means of arc-cone liner shaped charge simulation model,the paper analyzed the influence laws of the liner height and cone-height ratio on the penetrator length,length-diameter ratio,head diameter and head velocity by use of explicit finite element program LS-DYNA.The results demonstrated that the obtained penetrator＇s length and length-diameter ratio increased also with the cone height increasing gradually,while the head velocity decreased first and then increased,and when liner＇s cone height reached 0.15 times the charge diameter,the penetrator＇s length,length-diameter ratio and head velocity increased with the cone-height ratio increasing gradually,while the head diameter decreased gradually.The experiment results verify that the law of numerical simulation is coincidence with test result better.