FEM Analysis And Optimization Of The Antenna Structure For A Radar Vehicle

This paper is based on the theory of finite element method and stochastic wind load, the finite element model of the antenna structure for a radar vehicle is established and the finite element analysis of wind-caused vibration is studied. According to the theory of structural optimization design, the optimization design of the antenna structure is achieved.First of all, the basic character of wind is described, and the specialty of pulsated wind is discussed emphatically. The pulsated wind simulation method on the basis of triangular progression superpose synthetic method is introduced, and then simulates it by MATLAB software, in order to transfer it into wind loads. On the structural finite element aspect, the insufficient restriction occurred at the connected place of combined structure during modeling is studied, such like beam and shell, shell and solid, plane and beam, and then proposes the relevant solution. The finite element model of the radar vehicle is established under the ANSYS circumstance, and then under the action of stochastic wind load, the static and dynamic responses analysis is performed, in order to strengthen the weakness of the model. Finally, According to the theory of structural optimization design and the designation of optimization objective and design variables, the optimization design of the antenna structure is achieved.