Structural Optimization Design of a Certain Aircraft Gun Closed Bearing Band Sabot Based on Variable Density Method

Abstract

As the aircraft has a high overall weight requirement, it is indispensable to make lightweight design of aircraft gun. The structural optimization design of a certain aircraft gun closed bearing band sabot is studied based on the variable density method. And a new structure of the sabot is obtained. The structural unit density and minimum flexibility are taken as design variable and objective function. The volume reduction percentage, equilibrium equation and engineering manufacturing are taken as a constraint. The results of finite element analysis on the optimized sabot structure show that the weight of the sabot is reduced by 9.7%. And the stiffness and strength of the optimized structure are slightly increased. The aim of lightweight design is realized, and the feasibility of topology optimization design is proved. The conclusion from this research is that it has engineered application value for the structure improved design of aircraft gun, and also provides a design solution for other general mechanical structure problems.