Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Shape Design Optimization of Ship Structures Considering Thermal Deformation and Target Shape

열 변형과 목적형상을 고려한 선체구조의 형상 최적설계

  • 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)
  • 박성호 (서울대학교 조선해양공학과 및 해양시스템공학연구소) ;
  • 최재연 (삼성중공업 조선해양연구소) ;
  • 김민근 (서울대학교 조선해양공학과 및 해양시스템공학연구소) ;
  • 조선호 (서울대학교 조선해양공학과 및 해양시스템공학연구소)
  • Received : 2009.08.13
  • Accepted : 2010.04.22
  • Published : 2010.06.20
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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.

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References

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