船舶短上层建筑(甲板室)甲板应力分布规律研究  

Study on stress distribution law of deck of short superstructure of ship

作　　者：廖世扬 刘俊[1,2] 曾文源[3] LIAO Shi-yang;LIU Jun;ZENG Wen-yuan(State Key Laboratory of Ocean Engineering,Shanghai Jiaotong University,Shanghai 200240,China;Collaborative Innovation Center for Advanced Ship and Deep-sea Exploration,Shanghai Jiaotong University,Shanghai 200240,China;Marine Design and Research Institute of China,Shanghai 200011,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]上海交通大学高新船舶与深海开发装备协同创新中心,上海200240 [3]中国船舶及海洋工程设计研究院,上海200011

出　　处：《舰船科学技术》2024年第6期50-57,共8页Ship Science and Technology

摘　　要：船舶短上层建筑(或甲板室)由于规模小,横剖面正应力沿高度分布不满足平断面假定,应力分布规律与一般船型上层建筑不同,规范中缺乏针对性的设计依据。以一艘典型的短上层建筑油船为研究对象,设计多种短上建方案,借助有限元法对船舶短上层建筑甲板应力分布规律进行研究,讨论了短上层建筑长度、高度及其所在位置的影响,有限元结果与斯曼斯基和库尔庙莫夫理论公式结果的对比表明两式都有一定局限性,预报短上层建筑甲板应力会有误差。进一步在有限元结果和理论公式基础上提出新的短上建甲板应力分布公式的基本形式,采用指数函数模型对短上层建筑正应力进行拟合,得出短上层建筑船型的正应力沿高度分布规律公式,验算结果表明新公式适用性较好,可为早期短上层建筑船型强度设计提供参考。Due to the small scale of the short superstructure of the ship,the normal stress distribution along the height of the cross-section does not meet the plane cross-section assumption,and the stress distribution is different from that of the general ship-type superstructure.However,there is no targeted design basis in the specification.Based on a typical short superstructure oil tanker,this paper designs a variety of short superstructure schemes to study the normal stress distribution law of the deck of the short superstructure with the help of the finite element method,discusses the influence of the length,height and location of the superstructure,and compares the finite element results with the calculation results of the theoretical formula of Шиманский and Кудюмoв shows that the two formulas cannot be well applied to the calculation of the deck stress of the short superstructure.Furthermore,a new formula for the normal stress distribution law of short superstructure deck is proposed on the basis of the finite element results and theoretical formulas of each scheme.The exponential function model is used to fit the normal stress of the short superstructure to obtain the formula of the normal stress along the height distribution law of the short superstructure ship type,and the verification results show that the new formula is better applicable,which can provide a theoretical basis for the early design of the strength design of the short superstructure ship type.

关 键 词：短上层建筑 强度计算 正应力分布规律 指数拟合 

分 类 号：U661.99[交通运输工程—船舶及航道工程]