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Process of Structural Design and Analysis of Thin Pressure Cylinder for Shallow Sea Usage
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 Title & Authors
Process of Structural Design and Analysis of Thin Pressure Cylinder for Shallow Sea Usage
Lee, Jae-Hwan; Maring, Kothilngam; Kim, So-Ul; Oh, Taek-Chan; Park, Byoung-Jae;
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In this paper, an aluminum pressure vessel (cylinder) for a 200 m water depth is designed and analyzed. Because of their lack of usage in the deep sea, only a few papers about pressure vessels subjected to external pressures have previously been published. Moreover, the high level of imported external-pressure-vessel products limits the academic pursuit. Yet, research on internal pressure vessels is widely available because of their broad usage at onshore. This paper presents the process of basic designing and modelling of pressure vessels using the design rules of American Standard of Mechanical Engineering (ASME) Section VIII Division 1. To promote understanding, finite element analysis (FEA) result of an existing sample cylinder which was not designed by ASME code is compared with the design obtained in this paper. Several methodologies are used for the finite element analysis, including rectangular, cylindrical, and axisymmetric coordinate, to attain an accurate stress result. Same dimensions except the thickness of the cylinder and loading condition of 0.200 MPa was given for the current study. Finally, a rigorous design procedure is added for the bolt and boundary conditions of the cylindrical body and its ends. The obtained stress level satisfies the allowable design stress value specified in the ASME code.
External pressure vessel;ASME BPVC;Structural design;ANSYS FEA;Near sea;
 Cited by
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