SHAPED CHARGE JET PENETRATION INTO MULITILAYER METAL TARGETS WITH LARGE INTERVAL
At long standoff, a shaped charge with small cone angle will produce a jet with a high tip velocity and a low tail velocity, causing it to stretch and break up, so its penetration ability into multilayer metal targets is very weak, while the penetration depth of explosively formed projectiles (EFP) is too low to penetrate into multilayer metal targets. On account of this, the large cone angle shaped charge, whose internal cone angle is about 100 degree, is proposed and designed in the paper. The sensitivity of penetration effect into targets to the cone angle of the liner is investigated by experiment. The results reveal that the shaped charge penetration into multilayer metal targets with large interval is more optimistic than that of the shaped charge with small cone angle and explosively formed projectiles. In numerical simulation, based on MOCL (Marker on cell line) algorithm to track material interfaces, jet penetration into metal targets is simulated in a two-dimensional multi-material Eulerian code. The numerical results are in good agreement with the experimental ones and also indicate the MOCL algorithm has much better resolution for moving interfaces, especially effective for large deformation.
Cheng Wang Jianguo Ning Tianbao Ma
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, PR China.
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）