Abstract: This paper takes the missile radome as the subject of study. The missile radome is made of ceramic matrix composites. The finite element models of both ceramic missile radome and composite petal-type fragile cover are built by FEM. Transient dynamic mechanical analysis for the radome-cover impact process is computed using Abaqus software. In combination with the Fortran programming, the transient responses and the failure modes are obtained after the calculation. Calculation results show that, after the radome-cover impact, the integrity of radome remains unchanged and the protection cover breaks into pieces from the designated stress trough. The impact tests are carried out. The velocity of ceramic missile radome impact on fragile coveris 7.1 m/s. Results from radome to fragile cover impact test show good coincidence with the FEM simulation results. The process and parameters obtained in this paper provide a good guide for similar design.

Key words: ceramic matrix composite, missile radome, transient dynamics, impact process