Strength analysis for one type naval gun carriage based on the finite element method

To reduce the weight of bracket and production cost of the naval gun, the aluminum board welded structure is used. The strength check analysis must be conducted for the fire safety. Firstly, based on the three-dimensional CAD model of the bracket and according to the design date, the geometry of model was simplified. Secondly, the FEM model of the bracket was built with the FEM software MSC. Patran, and the FEM strength analysis was made. Finally, the deformation and stress for the key position was obtained, the strength check was made for the bracket. The result shows that the welding structure is meet with the strength condition after considering the safety factor of 1.5.