摘要
采用数值模拟与实验相结合的方法研究杆式射流装药水下作用行为.AUTODYN-2D程序数值模拟结果表明,采用偏心亚半球形罩装药可形成杆式射流,并能在水下产生空腔随进效应.装药长径比对杆式射流速度有一定影响,但对水下侵彻能力影响不大.炸高对杆式射流入水形状、速度梯度及水下侵彻能力有显著影响.对于口径54 mm偏心亚半球形铜罩装药,数值模拟与实验结果均表明,水下作用有利炸高约为4倍装药口径.
Combined studies on the behavior and effects of jetting penetrator charge when operated underwater were performed in simulation and experiment. Simulations of AUTODYN-2D hydrocode showed that a shaped charge with eccentric sub-hemisphere liner（SCESHL）can form jetting penetrator and produce precursor-follow effects underwater. Some influence of the ratio of length to diameter of SCESHL on the velocities of jetting penetrator were observed but appeared mildly on the penetration depth into water. Standoff influences significantly the shape, velocity gradient and penetration performances underwater of the jetting penetrator. The witness experiments underwater of SCESHL showed good agreement with the simulations, Optimum standoff is about 4 calibre of the SCESHL with 54 mm diameter.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2006年第3期189-192,共4页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目(20020571)
关键词
聚能装药
杆式射流
随进效应
水中侵彻
shaped charge
jetting penetrator charge
precursor-follow effect
penetration underwater
