Influence of Stiffeners on Strength of E-Glass/Epoxy Composite Submergible Hull Subjected to Shock Pressure Load using Finite Element Method

When an underwater explosion occurs, the explosive charge in the bomb is rapidly converted into a gas at a very high temperature and pressure. An initial shock wave and successive bubble pulsating waves can damage submersible hulls. For the submersible hull, the glass fiber/epoxy composite must be s...

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Bibliographic Details
Main Author: Reddy, A.C.
Format: Conference Proceeding
Language:English
Subjects:
Finite element analysis
Shock pressure load
Stiffener
Submersible hull
Underwater explosion
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Summary:When an underwater explosion occurs, the explosive charge in the bomb is rapidly converted into a gas at a very high temperature and pressure. An initial shock wave and successive bubble pulsating waves can damage submersible hulls. For the submersible hull, the glass fiber/epoxy composite must be strengthened using stiffeners to withstand shock loads of underwater explosion.This paper estimates the influence of shock pressure loading on the ring stiffened submersible hull using finite element analysis. The Eulerian and Lagrangian couplings were used to model underwater explosion. The failure analysis indicates that the fibers and matrix fail, respectively, in tension and in shear when the explosion charge exceeds 25 kg. The present study concludes that the stiffeners last long than the shell.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2017.07.082