半楔角对星锥状药型罩成型的影响

Effects of Star Shaped Liner of Different Half a Wedge on Jet Formation

为研究半楔角对星锥状药型罩成型的影响,利用LS-DYNA有限元分析软件对不同半楔角（15°,25°,35°,45°,55°,67.5°）的星锥状药型罩聚能装药结构形成射流的过程进行数值模拟,分析了其射流成型过程以及半楔角对星锥状药型罩的成型的影响。研究表明：星锥状药型罩的二次汇聚形成的射流速度比一次汇聚射流速度提高了33%以上;半楔角选取20°~35°较为合理;楔角个数为3时,其射流侵彻性能较好。

In order to study the effects of the star-shaped liner of differently half wedges（15°,25°,35°,45°,55°,67.5°） on jet formation,the LS-DYNA software was used to perform numerical simulation on the process that a structure of the new star-shaped liner forms jet,analyzing the forming process and the effects on forming and jet velocity of the differently half wedges of star shaped liners.Results show that the velocity of second-gathering jet which the star shaped liner forms increases by 33%,compared with the initial jet.The half wedges are suitable for 20°～35°.The penetration performance of jet is better when the number of wedge is 3.