Study On Manufacture Technology Of Composite Tropedo Shells Under High Hydrostatic Pressure

Based on some a torpedo composite shell under hydrostatic pressure,the engineering design and experiment research for the stability of composite torpedo stiffened shells are carried out under high hydrostatic pressure in the paper. And the manufacture technology of special shaped stiffened thin wall shell is investigated systemically in practice and theory.According to the special shape and operate requirements of the torpedo,the structure and moulding process of the torpedo shell are established,in which the body and overlay block with grooves are moulded by fiber winding,and close moulding respectively with the adhesive by limited stop compression. In the light of the selection of raw material system,composite system with outstanding performance are defined,based on which the mechanical properties are tested.,with the overall consideration of structural characters and design demands,the main factors which may have effects on the strength and stability (including stiffness section dimension,stiffeners space,skin thickness and skin lay angle) is optimized one by one for the structure design parameters on the base of the FEM model of skin,stiffness and layover block by FEM..As a result,the prototype with 1:1 proportion and its structure and lay optimization design are completed. The moulding technology for polyurethane foam moulding the stiffened shell is obtained in terms of the design,manufacture moulding,experimental mould and tooling. Furthermore,the prototype is experimented the hydrostatic test and provides the stress and strain results.The study on the structure design and manufacture technology of the stiffened composite shells used under high hydrostatic pressure has significance for the engineering design and manufacture of the analogy composite structure under hydrostatic.