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论文类型：期刊论文

发表时间：2019-11-01

发表刊物：OCEAN ENGINEERING

收录刊物：EI、SCIE

卷号：191

ISSN号：0029-8018

关键字：FPSO turret area; Scantling optimization; RBF; Evolutionary strategy

摘要：This paper presents the scantling optimization of a typical internal turret area for mooring system of FPSO under full loaded and ballast conditions. The thickness variables are determined by minimizing the weight of the turret area subjected to yeild stress constraints. The Radial Basis Function (RBF) model is built as a surrogate for computationally expensive Finite Element Method (FEM) analysis to improve the efficiency of the optimization. The evolutionary strategy is applied to the optimization. A turret area structure model has been taken as a verification model. The optimization result shows the advantage of achieving optimal thickness distribution of the turret that minimizes the weight under actural engineering constraints.