基于BESO算法的邮轮结构开孔拓扑优化

Topology Optimization of Cruise Structure Opening Based on BESO Algorithm

以大型邮轮舱段中的船底旁桁材结构为研究对象,采用结构优化算法,对大型豪华邮轮船底桁材结构进行开孔,并对其结构加以优化。结合多工况的船体结构优化的BESO算法,在特定的设计域内进行结构拓扑优化。在此基础上,分析了10种工况下优化开孔前后最大应力、平均应力和体积的变化,并对孔型结构进行了优化,以分析新开孔的力学性能。优化结果显示,在满足船体刚度的条件下,优化后,新式开孔的最大应力比优化前提高了44.26%。开孔后的面积比优化后减少51%,达到了轻量化的目的。研究结果可以用于指导船体建造。

the bottom truss structure of large luxury cruise ship cabin is taken as the research object,and the structural optimization algorithm is used to open the hole of the bottom truss structure of large luxury cruise ship and optimize its structure.Combined with the BESO algorithm of hull structure optimization under multiple working conditions,the structural topology optimization is carried out in a specific design domain.On this basis,the changes of maximum stress,average stress and volume before and after optimizing the opening under 10working conditions are analyzed,and the hole structure is optimized to analyze the mechanical properties of the new opening.The optimization results show that under the condition of satisfying the hull stiffness,the maximum stress of the new opening is increased by 44.26%after optimization.The area after opening is 51%less than that after optimization,which achieves the purpose of lightweight.The results can be used to guide hull construction.