横向弯曲载荷作用下双体船极限承载能力分析  

Analysis of Ultimate Strength of Catamaran Under Lateral Bending Load

作　　者：李虎 吴淏堃 张正[3] 甘进[3] LI Hu;WU Haokun;ZHANG Zheng;GAN Jin(ZhanJiang Naihai West Oil Survey&Design Co.Ltd.,Zhanjiang 524000,China;Ningbo Jiemao Ship Technology Co.Ltd.,Ningbo 315040,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]湛江南海西部石油勘察设计有限公司,湛江524057 [2]宁波捷茂船舶技术有限公司,宁波315040 [3]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2022年第5期873-877,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：武汉理工大学三亚科教创新园开放基金(2020kf0064)。

摘　　要：文中基于ABAQUS软件的Dynamic Explicit分析步对某双体船的舱段模型进行了数值分析,探讨了网格尺寸、加载方式等因素对双体船极限承载能力的影响.结果表明:网格尺寸会影响计算效率与计算结果,网格尺寸越大,计算所得极限弯矩越大,计算效率越高.双体船主要破坏模式为连接桥与片体相连的角隅处的屈曲破坏,实际结构设计中可以注重该处的补强.改进之后的加载方式可改善弹性阶段的应力集中现象,但对极限载荷的计算结果影响较小.Based on the Dynamic Explicit analysis step of ABAQUS software, the cabin model of a catamaran was numerically analyzed, and the influences of grid size, loading mode and other factors on the ultimate bearing capacity of catamaran were discussed. The results show that the mesh size will affect the calculation efficiency and results. The larger the mesh size, the larger the calculated ultimate bending moment, but the higher the calculation efficiency. The main failure mode of catamaran is the buckling failure at the corner where the connecting bridge connects with the hull, and the reinforcement at this corner can be emphasized in the actual structural design. The improved loading method can improve the stress concentration phenomenon in the elastic stage, but it has little influence on the calculation results of ultimate load.

关 键 词：双体船 横向弯矩 极限强度 ABAQUS 屈曲破坏 

分 类 号：U663.1[交通运输工程—船舶及航道工程]