| Artillery global structure optimal design is the foundation of artillery part optimal design, the implementation of artillery global structure optimal design can improve the develop speed of new kind of artillery, enhance the artillery global capability and make the best use of artillery part and global structure, which has a great significance.This thesis focuses on global structure optimal design of artillery with nonlinear finite element methods, for lighter weight design of towed howitzer. The main content is composed of followings:A new FEM modeling method for nonlinear howitzer global structure with beam element is presented, which can be used to dynamics simulation of towed howitzer, artillery recoil system is modeled with FEM, which based on artillery lunch dynamics and nonlinear FEM.An Intelligent optimal design method for towed howitzer global structure is presented, which combines with GA, data mining, and parameterized modeling, that can be used to multi-object, multi-parameter optimal design method for global structure. The relationship of howitzer model parameter and howitzer global structure effect is given. The evaluate rule of artillery global structure optimal design is put forward. An optimal design for the lightest weight of towed howitzer global structure is carried out, meaning while the global structure capability is considered.Mechanics simulation for optimization solution of towed howitzer global structure with solid elements is analyzed. A method of transforming the optimization solution into actual model is presented.An integration method of intelligent optimization design, finite element analyze and parameterized modeling based on general CAE software's second development platform(MSC.Patran) is constructed. An optimal design platform that is conveniently for debugging parameters is presented.
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