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http://dx.doi.org/10.7734/COSEIK.2012.25.6.477

Optimal Design of Deep-Sea Pressure Hulls using CAE tools  

Jeong, Han Koo (Department of Naval Architecture, Kunsan National University)
Henry, Panganiban (School of Mechanical and Automotive Engineering, Kunsan National University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.25, no.6, 2012 , pp. 477-485 More about this Journal
Abstract
Geometric configurations such as hull shape, wall thickness, stiffener layout, and type of construction materials are the key factors influencing the structural performance of pressure hulls. Traditional theoretical approach provides quick and acceptable solutions for the design of pressure hulls within specific geometric configuration and material. In this paper, alternative approaches that can be used to obtain optimal geometric shape, wall thickness, construction material configuration and stiffener layout of a pressure hull are presented. CAE(Computer Aided Engineering) based design optimization tools are utilized in order to obtain the required structural responses and optimal design parameters. Optimal elliptical meridional profile is determined for a cylindrical pressure hull design using metamodel-based optimization technique implemented in a fully-integrated parametric modeler-CAE platform in ANSYS. While the optimal composite laminate layup and the design of ring stiffener for a thin-walled pressure hull are obtained using gradient-based optimization method in OptiStruct. It is noted that the proposed alternative approaches are potentially effective for pressure hull design.
Keywords
deep-sea environment; pressure hull; CAE based optimization; optimal shape/thickness/stiffening; buckling constraint;
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Times Cited By KSCI : 1  (Citation Analysis)
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