| Summary: | 碩士 === 大葉大學 === 機械與自動化工程學系 === 107 === The submarine country is one of the important means and strategies for the construction of the army. But there is no experience in the design and construction of submarines. The important structure of the submarine include: pressure shell, sail structure, controlled rudder and balance wing. The key technology of research and development of submarine structure is one of the important goals of high strength and light weight. In recent years, the upper structure has gradually changed to FRP composite material as the main material, which can reduce the weight of the ship, reduce the center of gravity, improve the stability and other functions.
In this thesis, the ABAQUS finite element software is used for hydrostatically validation, the composite circular plate is tested for underwater explosion response and the pressure shell underwater explosion validation. This paper analyzes the pressure shell structure in the submarine system. Anti-knock analysis with the sail structure. The results show that the results of the experimental data and analytical data of the pressure shell underwater detonation test are quite close and the overall data trend is consistent; the dynamic buckling depth of the pressure shell model is 645 meters, and the static buckling water depth is 595.72 meters ,The depth of the buckling obtained by the dynamic buckling method is deeper. It can be inferred that the static frustration method is more conservative. The strength of the pressure shell structure is stronger. The FE510 steel sail cover and the FRP composite sail cover are in accordance with the knock design. HSF0.6 explosive strength under the sail cover structure using FRP composite material can reduce the weight by 7.357 tons, reducing the weight by 63.3%.
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