Uav Vehicle Box-type Emission Structure Optimization, Dynamic Simulation And Finite Element Analysis

In this thesis, the problem of launching canister for an unmanned aerial vehicle isresearched. Under premise of guaranteeing intensity and performance, applyingmechanical optimization design theory, virtual prototype technology and FEM,optimization design, dynamical simulation and FEM analysis of its structure are carried outand fulfill overall requests of launching.The present investigation mainly includes: (1). Mathematical model of frame andguiding rail of inner launching canister is set up by using mechanical design principles.Weight is mainly consdiered as object function, integrating with restrict conditions oflaunching process, applying punish function restriction optimization method, and maindesign parameters are optimized theoretically. (2). According to optimized parameters,three-dimensional solid modeling of launching canister is done by use of I-DEAS software,providing base for later dynamic simulation and finite element analysis. (3). Dynamicmodeling and simulation of launching canister are done with ADAMS software, mainlyexamines launching characteristics and impacting force situation under differentparameters. (4). Static analysis is carried out on launching canister structure, mainlyconsidering force situation during marching, analyzing bear the weight situation oflaunching canister and examining rationality of design for corresponding improvement.(5). Fracture process of resisting shear is simulated and analyzed by LS-DYNA software,fairly well reflecting fracture situation of resisting shear. The results of stress, stain, shearforce and fracture time are gained, invalidation fracture process of resisting shear pin arefully commanded, aim of analysis is achieved and indicate resisting shear pin can satisfydesign requirements.