Abstract: |
A launching bracket for a weapon station tower is one of the most important load bearing components of the launching device, and its strength and stiffness are critical to maneuverability and shooting stability of a remote weapon station. In this paper, the topology optimization of alaunching bracket for a weapon station tower is carried out on the premise of ensuring its structural safety and stability. Through the overloadand launch status in a march battle, the stress of the bracket backseat is analyzed under various working conditions. Based on the variable density method, the structural topology is optimized by setting constraints as extrusion, minimum size, maximum size and volume fraction ratio. According to the guidance of the optimization results, the structural design of the launching bracket is re carried out. Three stress bars are reset on the left and right trunnions of the tower, the trunnion box structure is simplified, and the stiffeners are set to conduct finite element strength check. The finite element structure is then analyzed. Compared with the original bracket, the mass of the bracket after topology optimization reduces by 10.8%, among which the stiffness increases by 32% and the strength increases by 45% under the 45° working condition; and under other working conditions, stiffness and strength improve to a varying degrees, which is of great significance to the lightweight of weapon stations and the improvement of weapon accuracy. |