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《中国海洋工程》 2001-04
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Multi-Objective Fuzzy Optimum Design Based on Reliability for Offshore Jacket Platforms

KANG Haigui LIU Wei , ZHAI Gangjun XU Facong and FENG ShengState Key Laboratory of Coastal ami Offshore Engineering, Dalian University of Technology, Dalian 116024, China Dalian Marine University, Dalian 116024, China  
In consideration of the fuzzy constraint boundary and through analysis of structural reliability, a model of structural fuzzy optimum design is established based on reliability for offshore jacket platforms. According to the characteristics of offshore jacket platforms, the tolerance coefficient of the constraint boundary is determined with the fuzzy optimization method. The optimum level cut set λ*, which is the intersection of the fuzzy constraint set and fuzzy objective set, is determined with the bound search method, and then the fuzzy optimum solution to the fuzzy optimization problem is obtained. The central offshore platform SZ36-1 is designed with the fuzzy optimum model based on reliability; the results are compared with those from deterministic optimum design and fuzzy optimum design. The tendency of design variables in the above three methods and its reasons are analyzed. The results of an example show that the fuzzy optimum design based on reliability is stable and reliable.
【Fund】: This research project was financially supported by the National Natural Science Foundation of China (Grant No. 59895410)
【CateGory Index】: O224;O342
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【References】
Chinese Journal Full-text Database 1 Hits
1 LI Gang a, 1, ZHANG Da-yong a, YUE Qian-jin a and Eric C. Spurgeonba State Key Laboratory of Structural Analysis of Industrial Equipment,Dalian University of Technology, Dalian 116024, China bDepartment of Civil and Environmental Engineering, University of Florida,Gainesville, FL 32612, USA;Efficient Approximate Method of Global Reliability Analysis for Offshore Platforms in the Ice Zone[J];中国海洋工程(英文版);2008-02
【Co-references】
Chinese Journal Full-text Database 5 Hits
1 FANG Hua-cana, DUAN Meng-lan b, 1, JIA Xing-lanc and XIE Bind a University of Petroleum, Changping, Beijing 102200, China b Department of Mechanical Engineering, Yangtze University, Jingzhou 434023, China c Beijing University of Aeronautics and Astronautics, Beijing 100083, China d Offshore Oil Engineering Co. LTD, Tanggu, Tianjin 300452, China;Fuzzy Fatigue Reliability Analysis of Offshore Platforms in Ice-Infested Waters[J];中国海洋工程(英文版);2003-03
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