中国舰船研究Issue(5)：77-84,8.DOI:10.3969/j.issn.1673-3185.2014.05.013
深海复合材料悬链线立管基于可靠度的优化设计
Reliability-Based Design Optimization of Deep-Water Composite Catenary Risers
摘要
Abstract
A reliability-based design optimization method is proposed in this paper for the deep-water composite catenary risers. Since the load carrying capacity of anisotropic laminated structures is very sus-ceptible to changes in the sequence, orientation, and thickness of plies, it is necessary to introduce a reli-ability index as a boundary condition during the optimization process. Compared to traditional steel risers, the composites have a broader application prospects due to several advantages, such as high specific strength and stiffness as well as high fatigue and corrosion resistance. The classic lamination theory is used to compute the equivalent mechanical properties of composite risers, and the global model is then estab-lished to obtain the response of the key section that serves to be the boundary for the local model. In addi-tion, the Design of Experiment(DOE)method is used to construct an approximate model, and the Monte Carlo method is utilized to analyze the result of the Deterministic Optimization(DO) and the Reliabili-ty-Based Design Optimization(RBDO). This study shows that the optimized results not only satisfy the strength requirements but also possess a lower weight and a better reliability,which are feasible for com-posite catenary risers.关键词
可靠度/优化设计/复合材料/悬链线立管/Kriging模型/试验设计Key words
reliability/optimization design/composite materials/catenary riser/Kriging model/Design of Experiment(DOE)分类
交通工程引用本文复制引用
沈钦雄,杨和振,朱云..深海复合材料悬链线立管基于可靠度的优化设计[J].中国舰船研究,2014,(5):77-84,8.基金项目
国家自然科学基金资助项目 （）
