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http://dx.doi.org/10.3744/SNAK.2010.47.3.430

Shape Design Optimization of Ship Structures Considering Thermal Deformation and Target Shape  

Park, Sung-Ho (Department of Naval Architecture and Ocean Engineering And Research Institute of Marine Systems Engineering, Seoul National University)
Choi, Jae-Yeon (Marine Research Institute, Samsung Heavy Industries Co., Ltd)
Kim, Min-Geun (Department of Naval Architecture and Ocean Engineering And Research Institute of Marine Systems Engineering, Seoul National University)
Cho, Seon-Ho (Department of Naval Architecture and Ocean Engineering And Research Institute of Marine Systems Engineering, Seoul National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.47, no.3, 2010 , pp. 430-437 More about this Journal
Abstract
In this paper, we develop a shape design optimization method for thermo-elastoplasticity problems that is applicable to the welding or thermal deformation problems of ship structures. Shell elements and a programming language APDL in a commercial finite element analysis code, ANSYS, are employed in the shape optimization. The point of developed method is to determine the design parameters such that the deformed shape after welding fits very well to a desired design. The geometric parameters of surfaces are selected as the design parameters. The modified method of feasible direction (MMFD) and finite difference sensitivity are used for the optimization algorithm. Two numerical examples demonstrate that the developed shape design method is applicable to existing hull structures and effective for the structural design of ships.
Keywords
Thermo-elastic-plastic analysis; Welding deformation; Shape design optimization; Finite difference sensitivity; Method of feasible direction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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