Numerical simulation on ballistic performance of ceramic composite spaced targets

Numerical simulation on the penetration of 12.7mm armor-piercing incendiary into ceramic composite spaced targets were performed by using the finite element software ANSYS/LS-DYNA, and calculated results were verified by the test results. Penetration process of bullet core and the mechanism of composite target plate were analyzed, difference of anti-bullet properties between the two target structures A, B were compared, the influence different points of impact have on resistance of ceramic composite target plate were studied. The main conclusions: The numerical simulation results and the experimental results are basically consistent; during the process of non-central impaction, the deflection of the projectile is mainly due to the asymmetric resistance of the back plate, and the effect of the gap and the base plate is to magnify the deflection effect; the longer the eccentric distance is, the more obvious the yaw effect of projectile is; ballistic performance of the diagonal is better than that of the main axis when impact point is same; effective protection area of target plate B is larger than that of target A, and its comprehensive ballistic performance is better than target A.