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http://dx.doi.org/10.3744/SNAK.2020.57.4.198

Dynamic Stability Assessment of Pressure Hull in Deep Sea against Implosion Pressure Pulse  

Nho, In Sik (Dept. of Naval Architecture & Ocean Engineering, Chungnam National University)
Cho, Sang Rai (UlsanLap Co.Ltd)
Cho, Yoon Sik (Agency for Defense Development)
Publication Information
Journal of the Society of Naval Architects of Korea / v.57, no.4, 2020 , pp. 198-206 More about this Journal
Abstract
In this study, the dynamic structural behavior of pressure vessels due to pressure pulse initiated by implosion of neighbouring airbacked equipments including Unmanned Underwater Vehicles (UUV), sensor system, and so on were dealt with for the structural design and safety assessment of pressure hulls of submarine. The dynamic buckling and collapse responses of pressure vessel in deep sea were investigated considering the effects of initial hydrostatic pressure and fluid-structure interactions. The governing equations for circular cylindrical shells were formulated theoretically assuming a relatively simple displacement fields and the derived nonlinear simultaneous ordinary differential equations were analysed by developed numerical solution algorithm. Finally, the introduced safety assessment procedures for the dynamic buckling behaviors of pressure hulls due to implosion pressure pulse were validated by comparing the theoretical analysis results with those of experiments for examples of simple cylinders.
Keywords
Implosion; Pressure pulse; Pressure hull; Nonlinear ODE; Initial hydrostatic pressure; Fluid-structure interactions;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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