Optimization design for sheet metal parts of mobile electron radar based on finite element analysis

Based on illuminating the structure, working principle and force analysis of mobile electron radar, the finite element analysis of sheet metal shell is carried out on ANSYS Workbench (AWE) platform. First, the structure of sheet metal shell is simplified, then the 3D entity model and meshing model of sheet metal parts both are established. Secondly, the material attribute, contact type, load and constraints of computation model are defined, and the total deformation, equivalent stress and safety factor of sheet metal shell are gained after numerical calculation. The results show that the local deformation of shell is too large, the safety factor being low, and the stiffness cannot satisfy the requirement. In order to improve the stiffness of sheet metal shell, the strengthen ribs are stamped on the plane of shell, and the plane supporting frame is made into steps. The analysis shows that the sheet metal shell has high safety factor, uniform stress, small deformation, superior performance after optimizing, and it also can fully meet the requirement of using.