摘要
利用数值模拟方法,研究了主装药与飞片之间的空气隙厚度变化对飞片中载荷幅度和载荷上升时间、飞片速度和飞片变形量的影响。数值模拟与验证实验结果吻合得较好。结果表明,带空气隙的化爆加载装置可以在飞片中获得较小的载荷幅度和较长的载荷上升时间,并且可以降低飞片击靶速度,从而实现较低的冲击压力,但飞片变形量随着空气隙厚度增大而增大。
The influence of an air cushion between the main charge and the flyer was studied by numerical simulationon. The magnitude of load and the width of wave front in the flyer, the flyer velocity and the shape of the flyer front surface are investigated in detail. The calculated results are in good agreement with the experimental data. The results show that the explosive-loading device with an air cushion can be used to get a lower magnitude of load and a longer width of wave front in the flyer. The velocity of the flyer is descreased too. But the deformation of the flyer increaes with the thickness of the air cusshion.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2004年第5期419-424,共6页
Explosion and Shock Waves
基金
中国工程物理研究院重大基金项目(2002Z01041)
关键词
爆炸力学
爆轰驱动
数值模拟
飞片
空气隙
mechanics of explosion
detonation drive
numerical simulation
flyer
air cushion
