there are many plates and beams on the radar array. In the process of finite element calculation, choosing the appropriate shell mesh finite element model to replace the solid finite element model can reduce the calculation amount. In this paper, the finite element solid mesh model is established based on the reflection panel model of a radar antenna array, and the simulation results are obtained. Secondly, the shell grid is used to perform finite element modeling and correction calculations on the reflective panel. The results show that the modified shell grid calculation results are very close to the solid grid model results, and can replace the solid grid to simplify the calculation of the array.

A large-scale meter wave high maneuvering dual polarization radar is designed with a cantilever folded beam. In order to realize the high tolerance spread of its dual polarization antenna, it is necessary to ensure that its folded spread antenna array has high plane stiffness. Firstly, the finite element model is established according to the geometrical model of the antenna array. Secondly, the corresponding load conditions are determined according to the material parameters of the antenna array, different wind loads and temperature fields. Then, the mechanical calculation and analysis of the antenna array are carried out by using NASTRAN software, and the deformation, stress and deformation of the antenna array element and folded beam under different conditions are obtained Square root value. The results show that the array can meet the requirements of stiffness and strength.