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串联战斗部不同介质组合的隔爆能力 预览

Explosive Interruption of Tandem Warhead with Different Multilayer Structures
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摘要 为了有效提升串联切割战斗部隔爆结构衰减爆炸冲击波的性能,解决前级聚能装药结构与后级随进弹的匹配及隔爆问题,在前级切割器和后级随进弹之间加装隔爆结构,使用有限元分析软件ANSYS/LS-DYNA建立模型,进行不同组合结构隔爆性能的数值模拟,比较隔爆能力。模拟结果表明:前级装药起爆后,爆炸冲击波首先向后级随进弹头靠里区域汇聚,而不是向弹头尖端区域汇聚,因此可以适当减薄外层金属隔爆介质头部尖端区域;将外层金属由硬质钢改成铝时,后端壳体应力峰值的变化很小,故确定外层金属介质为铝;铝-聚脲的隔爆能力优于铝-泡沫铝结构,最终确定“软”隔爆介质为聚脲。通过调整铝和聚脲层的厚度,确定了最佳隔爆参数,能够满足实际应用。 In this work we improved the explosion shock wave mitigation capability of the interruption structure in the tandem cutting warhead and matched the front shaped charge with the post-stage projectile and the explosive interruption by installing the explosive interruption structure between the front cutter and the rear following projectile,and established the simulation model using ANSYS/LS-DYNA,a finite element analysis software.We also analyzed the mitigation capabilities of the structures in different combinations and compared their explosive interruption capabilities using numerical simulation.The results showed that the explosion shock wave first converged to the inner region of the projectile,rather than to the tip of the warhead,so that the tip area of the outer metal flameproof medium was thinned properly.When the outer metal turned from hard steel to aluminum,little change was observed in the stress peak value of the rear end shell,suggesting that the outer metal medium was aluminum.Judging by the comparative study,the aluminum polyurea flameproof capability was superior to the aluminum foam-aluminum structure.Finally,the "soft" explosive interruption medium was determined to be polyurea,and the best explosion proof parameters were determined by adjusting the thickness of the aluminum and polyurea layer,which serves the needs of practical applications.
作者 刘宏杰 王伟力 苗润 吴世永 王俊华 LIU Hongjie;WANG Weili;MIAO Run;WU Shiyong;WANG Junhua(Coastal Defense College,Naval Aeronautical University,Yantai 264001,China;Academy of Weapons Engineering,Naval Engineering University,Wuhan 430000,China;Basic Department,Naval Aeronautical University,Yantai 264001,China;Faculty of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China)
出处 《高压物理学报》 CAS CSCD 北大核心 2019年第1期86-98,共13页 Chinese Journal of High Pressure Physics
关键词 串联战斗部 冲击波 多层介质 隔爆 tandem warhead shock wave multilayered media explosive interruption
作者简介 刘宏杰(1993-),男,硕士研究生,主要从事弹药设计与目标毁伤评估研究.E-mail:1300202650@qq.com;通信作者:王伟力(1962-),男,教授,博士生导师,主要从事战斗部毁伤效应研究.E-mail:858769430@qq.com
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