A New Rational-based Optimal Design Strategy of Ship Structure Based on Multi-level Analysis and Super-element Modeling Method  

作　　者：Li Sun Deyu Wang 

机构地区：[1]State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China

出　　处：《Journal of Marine Science and Application》2011年第3期272-280,共9页船舶与海洋工程学报（英文版）

基　　金：Supported by the Project of Ministry of Education and Finance(No.200512);the Project of the State Key Laboratory of ocean engineering(GKZD010053-10)

摘　　要：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.

关 键 词：rational-based optimal design method （RBODM） multi-level analysis SUPER-ELEMENT ship module genetic algorithm 

分 类 号：U663[交通运输工程—船舶及航道工程] TS254.3[交通运输工程—船舶与海洋工程]