Abstract
A new multi-level analysis method of introducing the super-element modeling method, derived from the multi-level analysis method first proposed by O. F. Hughes, has been proposed in this paper to solve the problem of high time cost in adopting a rational-based optimal design method for ship structural design. Furthermore, the method was verified by its effective application in optimization of the mid-ship section of a container ship. A full 3-D FEM model of a ship, suffering static and quasi-static loads, was used as the analyzing object for evaluating the structural performance of the mid-ship module, including static strength and buckling performance. Research results reveal that this new method could substantially reduce the computational cost of the rational-based optimization problem without decreasing its accuracy, which increases the feasibility and economic efficiency of using a rational-based optimal design method in ship structural design.
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Foundation item: Supported by the Project of Ministry of Education and Finance (No.200512) and the Project of the State Key Laboratory of ocean engineering (GKZD010053-10).
Li Sun was born in 1986. He is a candidate for a master degree at Shanghai Jiaotong University. His current research interests include marine structural optimization and dynamic analysis of marine structures.
Deyu Wang was born in 1963. He works at Shanghai Jiaotong University as a structural mechanics professor. His current research interests include structural optimization as well as dynamic and fatigue analysis for marine structures.
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Sun, L., Wang, D. A new rational-based optimal design strategy of ship structure based on multi-level analysis and super-element modeling method. J. Marine. Sci. Appl. 10, 272–280 (2011). https://doi.org/10.1007/s11804-011-1069-y
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DOI: https://doi.org/10.1007/s11804-011-1069-y