TY - JOUR
T1 - 铝药型罩环形聚能射流的数值模拟
AU - Wang, Cheng
AU - Deng, Tao
AU - Xu, Wen Long
N1 - Publisher Copyright:
© 2019, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Based on an annular shaped charge with aluminum liner, different modes of initiation (initiation radius D1) and length-to-diameter ratio (L/D) were simulated by Autodyn to measure the formation and jet speed of the annular jet. Numerical results showed that the formation process of the annular jet was mainly influenced by L/D, the jet tip had an inward deflection when L/D was relatively small, and an outward deflection otherwise. The axial jet speed was positively related to and also mainly influenced by L/D, and the maximum difference was about 700 m/s. The radial jet speed was mainly influenced by modes of initiation, and the maximum radial jet speed difference was about 220 m/s. The radial jet speed gradient was greater when D1 or L/D was relatively small or big. Combined with jet formation and speed, D1=0.5D and L/D=1.0 were preferred settings for this charge. The hole diameter of the concrete target was 2.6D1, which is 7.7% bigger than the numerical result. The penetration experiment demonstrates that the calculation model and method are appropriate.
AB - Based on an annular shaped charge with aluminum liner, different modes of initiation (initiation radius D1) and length-to-diameter ratio (L/D) were simulated by Autodyn to measure the formation and jet speed of the annular jet. Numerical results showed that the formation process of the annular jet was mainly influenced by L/D, the jet tip had an inward deflection when L/D was relatively small, and an outward deflection otherwise. The axial jet speed was positively related to and also mainly influenced by L/D, and the maximum difference was about 700 m/s. The radial jet speed was mainly influenced by modes of initiation, and the maximum radial jet speed difference was about 220 m/s. The radial jet speed gradient was greater when D1 or L/D was relatively small or big. Combined with jet formation and speed, D1=0.5D and L/D=1.0 were preferred settings for this charge. The hole diameter of the concrete target was 2.6D1, which is 7.7% bigger than the numerical result. The penetration experiment demonstrates that the calculation model and method are appropriate.
KW - Annular shaped charge
KW - Length-to-diameter ratio
KW - Modes of initiation
KW - Numerical simulation
UR - https://www.scopus.com/pages/publications/85077942463
U2 - 10.15918/j.tbit1001-0645.2019.071
DO - 10.15918/j.tbit1001-0645.2019.071
M3 - 文章
AN - SCOPUS:85077942463
SN - 1001-0645
VL - 39
SP - 1211
EP - 1218
JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
IS - 12
ER -