A Study on an Underwater Toroidal Vessel with Circular Cross-Section
Authors: Enoma N
Thin-shell structures find widespread application in underwater fields and are constructed to withstand environmental loads, including hydrodynamic loads. For circular toroidal vessels, which are a form of shells of revolution, the design analysis has mainly been centred on uniform hydrostatic pressure loading. This assumption is quite reasonable for vessels in deeper waters, but very conservative for hydrostatically loaded toroidal shells in shallow waters where the theoretical critical pressures are relatively higher, as demonstrated in this paper. Here, the linear theory of shells was employed for formulating the membranestress- state results and Abaqus finite element tool was used for the linear eigenvalue analysis. Important structural features of circular toroids under hydrostatic pressure which, of course, varies linearly with depth are reported based on linear-elastic material properties.
Affiliations: Department of Mechanical Engineering, University of Benin, Nigeria.
Keywords: Containment Shell, Finite Element Analysis, Hydrostatic Pressure, Shell Analysis, Submerged Toroidal Vessel
Published date: 2019/06/30