Finite Element Analysis of Deep Elliptical Submersible Pressure Hull Subjected to a Side-On Non-Contact Underwater Explosion

Abstract:

Predicting the dynamic response of a floating and submerged structure subjected to underwater explosion is greatly complicated by the explosion of a high explosive, propagation of shock wave, bubble-pulse, complex fluid-structure interaction phenomena and the dynamic behavior of the floating structures. A numerical simulation has been carried out to examine the behavior of elliptical submersible pressure hull to non-contact underwater explosion (UNDEX) and take the effect of bubble-pulse. The finite element package ABAQUS was used to model the UNDEX and the fluid-structure interaction (FSI) phenomena. The pressure wave resulting from an UNDEX was assumed to be a spherical wave. Plastic strain and the time histories of the wet-surface displacement, velocity and von Mises stress are presented. The analytical results are valuable for designing underwater vehicles to resist UNDEX.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 256-262
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.256
• Online since: July 2014
• Authors: Fathallah Elsayed, Li Li Tong*, Hui Qi, Mahmoud Helal
• Keywords: Damping Material, Shock Damage, Stiffened Plates, Underwater Explosion

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