大开口深拖母船全船强度有限元分析  

Finite Element Strength Analysis of Deep-towed System on Mother Ship with Large Open-hatch

作　　者：殷小琪 刘亚东[1,2] YIN Xiaoqi;LIU Yadong(Shanghai Jiao Tong University,State Key Laboratory of Ocean Engineering,Shanghai 200240,China;Shanghai Jiao Tong University,Collaborative Innovation Center for Advanced Ship and Deep-sea Exploration,Shanghai 200240,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

出　　处：《船舶工程》2020年第9期44-48,92,共6页Ship Engineering

摘　　要：在深拖母船舯部位置设置上下贯通的大开口结构会严重削弱船舶的总纵强度和弯扭强度,因此在对该开口区域进行详细设计之后,有必要采用全船结构有限元分析方法对船舶的结构强度和变形水平进行评估。采用设计波法得到波浪载荷,计算全船结构在各种工况下的应力和变形结果,总结出该船型的受力特点,并结合全船结构强度直接计算结果,对选取的典型节点进行疲劳强度评估,得到各典型节点的疲劳寿命,为目标船的结构优化提供参考。The large opening structure is set through the midship of the deep-towed system on mother ship,which will seriously weaken the longitudinal strength and bending-torsion strength.Therefore,after the detail design of the opening area,it is necessary to carry out the global ship finite element analysis to evaluate its structure strength and deformation.The wave loads are obtained based on the design wave method.The stress and deformation of the global ship structure under various working conditions are calculated.The feature of stress for the type of ships are summarized.Combined with the direct calculation results of the structure strength of the whole ship,the fatigue strength of the selected typical hot spotsare evaluated,and the fatigue life of each hot spot is obtained.It offers reference for the structure optimization of the target ship.

关 键 词：大开口船 深拖母船 设计波法 全船有限元分析 疲劳强度 

分 类 号：U661.43[交通运输工程—船舶及航道工程]