CAJ | 학술논문

为研究?30 mm装药的聚能射流对屏蔽B炸药的冲击起爆问题,采用非线性有限元LS￣DYNA程序数值模拟了聚能射流形成、侵彻及冲击引爆屏蔽B炸药作用过程,得到了射流穿过50~75 mm不同厚度屏蔽钢板的速度、直径以及侵入炸药界面的射流能量值,得到引爆B炸药的临界屏蔽板厚度,计算获得该聚能射流临界起爆速度。最后通过试验对数值计算的B炸药起爆特性进行了验证,试验结果与计算符合较好。研究证明,?30 mm装药的聚能射流对屏蔽B炸药的临界引爆屏蔽板厚度为70 mm,可用于反导战斗部毁伤目标。
위연구?30 mm장약적취능사류대병폐B작약적충격기폭문제,채용비선성유한원LS￣DYNA정서수치모의료취능사류형성、침철급충격인폭병폐B작약작용과정,득도료사류천과50~75 mm불동후도병폐강판적속도、직경이급침입작약계면적사류능량치,득도인폭B작약적림계병폐판후도,계산획득해취능사류림계기폭속도。최후통과시험대수치계산적B작약기폭특성진행료험증,시험결과여계산부합교호。연구증명,?30 mm장약적취능사류대병폐B작약적림계인폭병폐판후도위70 mm,가용우반도전두부훼상목표。
To study the property of shielded composition B initiated by a ?30mm shaped charge jet, the numerical simulation for the process of shaped charge jet formation, penetrating and shock initiating the shielded composition B was studied by means of nonlinear finite element analysis software LS￣DYNA. The parameters, such as jet velocity, diameter and impact energy through the different shield steel plates in the thickness of 50￣75mm were obtained. Also, the critical in￣itiation thickness of shaped charge jet to shielded composition B was obtained, and the critical velocity of jet impacting initi￣ation shielded composition B was calculated. These calculation results were examined by a series of tests. It concludes that the calculation results are in agreement with the experimental ones, and the critical initiation thickness of shaped charge jet with a charge diameter of 30mm to shield composition B is 70mm, which could be applied to anti￣missile warhead in the fu￣ture.