摘要
为获得适用于柱面带壳装药的冲击起爆修正判据,以Picatinny工程判据为基础加入修正项进行修正。采用AUTODYN-3D软件对破片撞击柱面带钢壳的B炸药进行数值计算,获得了破片入射角、装药曲率半径对炸药临界起爆速度的影响规律;通过拟合得到修正项表达式,建立了考虑破片入射角、柱壳装药形状函数的炸药起爆临界速度修正判据。判据计算值与实验数据和数值计算值吻合较好,该判据能较好的预测柱形带壳装药的冲击起爆条件。
In this work,to obtain the critical detonation velocity calculation model about the cylindrical covered charge impacted by fragments,we added the correction terms to the velocity calculation based on the Picatinny engineering criterion.We found out about the influence of the fragment impact angle and the charge curvature radius on the critical detonation velocity using the AUTODYN software through simulating the tungsten fragment impact cylindrical steel casing filled with B explosive.Based on the fitting expression,we established the critical velocity calculation model of the explosive initiation considering the impact angle and the charge shape function.The model calculation values are in good agreement with the experimental data and the simulation results,thereby suggesting that the model can provide a better prediction of the impact initiation of the cylindrical covered charge.
作者
王昕
蒋建伟
王树有
门建兵
WANG Xin;JIANG Jianwei;WANG Shuyou;MEN Jianbing(School of Mechatronical Engineering, Beijing Institute of Technology,Beijing 100081, China)
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2019年第1期22-29,共8页
Explosion and Shock Waves
关键词
临界速度
冲击起爆
柱壳装药
修正判据
critical velocity
impact initiation
cylindrical covered charge
calculation model
