Towed Artillery Overall Structure Of The Multi-objective Optimization

This thesis mainly researches the multi-objective optimal design of artillery global structure based on the concept of Pareto-optimum, the research objective is based on a sort of towed howitzer. Anon-linear finite element model of howitzer global structure is created with beam element. According to the theory of artillery launch dynamics, the finite element models of towed howitzer on the elevation/direction fire angles of 0°/0°and 70°/22.5° are computed. A high-efficient method of artillery global structure optimal design which not only reduces the mass of towed howitzer but also improves the fire stability and the structure strength of artillery is presented. It combines the parameterized modeling with the Genetic Algorithm(GA) for multi-objective optimization based on the Pareto-optimum.Parameterized modeling based on universal CAE software's secondary development platform(MSC.Patran) is constructed. MSC.PATRAN and MSC.NASTRAN are integrated into iSIGHT optimization software's platform. The artillery global structure is opitimized on multi-objective with Neighborhood Cultivation Genetic Algorithm(NCGA). The optimization result is satisfied .The design of artillery global structure realized integration, automatization and intelligentized of "Design-Opitimization-Redesign".