Simulation on the radiation characteristic of planar array antenna subjected to the single-hole damage

Base on the characteristic of a rectangular grid planar array antenna, the far field of a damaged antenna is modeled. A simulation of penetration condition totally for single-fragments is developed using the software ANSYS/LS-DYNA. The penetration of antenna with 0° attack angel and 800m/s velocity is simulated using Johnson-Cook material model, and we can gain the penetrated distortion data. Finally, through the simulation using MATLAB, a study was used to verify the influence characteristics between the position of the damage circle and the radiation characteristic of the antenna.