基于I-BESO的邮轮结构开孔耦合拓扑优化

Research on opening coupling topology optimization of cruise ship structures

针对传统的BESO算法无法只优化开孔,文中以邮轮甲板纵桁、舷侧和贯穿孔结构为研究对象,改进BESO算法得到适用于多工况船体开孔孔型优化的I-BESO算法.对开孔孔型迭代优化,分析多工况下多种类开孔耦合优化.开孔体积减轻比达到20.92%,满足轻量化设计目标,并且缓解应力集中,使结构应力均衡分布.

In view of the fact that traditional BESO algorithms cannot only optimize openings,we take the longitudinal truss,hull side,and through hole structures of cruise ship decks as the research object,and improve the BESO algorithm to obtain the I-BESO algorithm suitable for optimizing the opening hole types of ship hulls under multiple working conditions.Iterative optimization of hole types and analysis of multi type hole coupling optimization under multiple operating conditions are carried out.The reduction ratio of the opening volume reaches 20.92%,meeting the lightweight design goal and alleviating stress concentration,so as to achieve a balanced distribution of structural stress.