基于遗传算法的邮轮舷侧开口结构补强技术研究  

Research on Reinforcement Technique for Side Shell with Openings on Curise Ships Based on Genetic Algorithm

作　　者：王卓[1,2] 孔祥韶[1] 吴卫国[1] WANG Zhuo;KONG Xiangshao;WU Weiguo(Green and Smart River-Sea-Going Ship,Cruise and Yacht Research center,Wuhan University of technology,Wuhan 430063,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学绿色智能江海直达船舶与邮轮游艇研究中心,武汉430063 [2]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《中国造船》2023年第6期86-100,共15页Shipbuilding of China

摘　　要：为提高国产化大型邮轮结构轻量化设计水平,开展基于遗传算法的舷侧开口结构补强技术研究。采用非线性有限元方法探究了常见补强加筋形式对舷侧开口结构在轴向压缩和垂向剪切载荷作用下的极限承载能力的增强效果,并详细分析了补强加筋间距、高度和厚度等参数对结构加强效果的影响。随后采用遗传算法开展邮轮舷侧开口结构补强加筋多目标优化研究,获得了增强效果好和结构重量增加较少的综合性能最优Pareto前沿解以及最优个体。研究结果表明,补强加筋可通过限制舷侧开口结构窄、纵向带板应力集中与屈曲失稳的方式,提高结构整体轴压极限承载能力。最后根据多目标优化结果给出了建议的补强加筋设计方案。To improve the lightweight design of domestic large cruise ship,a research on the stiffener reinforcement technology for side shell with openings is carried out based on genetic algorithm.Nonlinear finite element method was first used to investigate the effect of common form of stiffener reinforcements on the ultimate loading capacity of the side shell with openings under combined axial compression and vertical shear load.Then,the influences of reinforcement spacing,reinforcement height,and reinforcement thickness on the strengthening effects of stiffeners were analyzed in detail.Subsequently,a multi-objective optimization study of stiffener reinforcement for side shell with openings on large cruise ship was carried out using genetic algorithm.The optimal Pareto frontier solutions and the optimal design points were obtained,which could provide higher strengthening effect and less additional weight with the structure.The results show that the stiffener reinforcement can significantly improve the overall compressive ultimate load of the side shell with openings by suppressing the stress concentration and buckling of the narrow longitudinal strip plate.Based on the multi-objective optimization results,the suggested stiffener reinforcement design method were proposed.

关 键 词：邮轮 舷侧开口结构 有限元 遗传算法 多目标优化 

分 类 号：U661.43[交通运输工程—船舶及航道工程]