双层底船体典型节点高周疲劳性能评估方法  

Assessment Method for High-cycle Fatigue Performance of Typical Joints in Double Bottomed Hull

作　　者：刘瑞[1] 严仁军[1,2] 游瑞章 LIU Rui;YAN Renjun;YOU Ruizhang(Departments of Naval Architecture Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Key Laboratory of High Performance Ship Technology of Ministry of Education,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,武汉430063 [2]武汉理工大学高性能舰船技术教育部重点实验室,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第5期929-935,940,共8页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：文中选取某大型散货船的双层底过渡区节点作为研究对象,提出了基于肘板区域应力分布简化计算模型的疲劳评估方法,对不同肘板类型热点区域的应力分布进行理论推导,设计缩比模型试验,综合试验和有限元分析验证了简化计算模型的有效性.采用D曲线对节点模型进行疲劳评估,对比高周疲劳试验结果,证明了该模型用于船体双层底节点疲劳评估的有效性.A fatigue evaluation method based on a simplified calculation model of stress distribution in elbow plate area was proposed by selecting the joint of double bottom transition zone of a large bulk carrier as the research object.The stress distribution in hot spots of different elbow types was theoretically deduced,and a scaled model test was designed.The effectiveness of the simplified calculation model was verified by comprehensive test and finite element analysis.D curve was used to evaluate the fatigue of the joint model.Compared with the results of high cycle fatigue test,it is proved that the model is effective in fatigue evaluation of double bottom joints of hull.

关 键 词：典型节点 肘板 热点应力 高周疲劳试验 疲劳强度评估 简化计算模型 

分 类 号：U663.2[交通运输工程—船舶及航道工程]