平头圆柱装药弹体静态爆炸破碎与飞散特性  

Exploration of explosive fragmentation and dispersion characteristics of static flat-headed cylindrical charge projectile

作　　者：林远志 侯海量[1] LIN Yuanzhi;HOU Hailiang(College of Naval Architecture and Ocean Engineering,Naval Univ.of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船与海洋学院,武汉430000

出　　处：《海军工程大学学报》2025年第1期20-28,共9页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(51679246,51979277)。

摘　　要：为探讨反舰战斗部舱内爆炸高速破片破碎飞散特性,采用平头圆柱装药弹体、长方体型采样舱,开展了平头圆柱装药弹体静态爆炸破碎与飞散特性试验,结合SPH数值模拟,分析了一端起爆下平头圆柱装药弹体的爆炸破碎过程、破碎形态及破片飞散特性,以及侧壁厚度、侧壁长度与缩放尺度的影响规律。拟合了侧壁厚度、长度、缩放尺度分别与三区段长(或飞散偏角)的关系。试验结果表明:钢制圆柱壳体内部炸药爆轰作用下,侧壁破碎及飞散呈三段式分布,两侧端部破片速度比中部慢、破碎程度高,纵向裂纹分别由两端产生并向中部扩展,中部以条形破片为主。该研究结果为战斗部和防护结构设计提供了参考。For the exploration of high-speed fragment dispersion characteristics resulting from an explosion within the warhead of an anti-ship projectile,static explosive fragmentation and dispersion experiments were conducted using a flat-headed cylindrical charge projectile and a rectangular sampling cabin.In Combination with SPH numerical simulation,the explosion fragmentation process,fragmentation shapes,and fragment dispersion characteristics of a flat-headed cylindrical charge projectile initiated at one end were analyzed,and the impact of sidewall thickness,sidewall length,and scaling on fragmentation patterns were also examined.The results indicate that three segments of sidewall fragmentation and dispersion under the detonation of explosives within the steel cylindrical shell,that fragments generated at the two ends show lower speeds but higher degrees of fragmentation compared to those in the middle area,and that longitudinal cracks are initiated at both ends and propagate towards the middle,with strip-like fragments mainly found in the central part.The relationships between sidewall thickness,length,scaling,and the lengths of the three segments(or dispersion deviation angles)are also determined.The research findings offer reference value for the design of warheads and protective structures.

关 键 词：爆炸 自然破碎 数值模拟 破片 

分 类 号：O385[理学—流体力学]