船体结构加筋板极限强度的影响因素  

Influencing Factors of Ultimate Strength of Stiffened Plate of Ship Structure

作　　者：梅佳雪 杜尊峰[1] 朱海涛 MEI Jiaxue;DU Zunfeng;ZHU Haitao(School of Civil Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Coast Civil Structure Safety of Ministry of Education,Tianjin 300072,China)

机构地区：[1]天津大学建筑工程学院,天津300072 [2]天津滨海土木工程结构与安全教育部重点实验室,天津300072

出　　处：《船舶工程》2021年第9期37-42,64,共7页Ship Engineering

摘　　要：采用非线性有限元软件ABAQUS,应用弧长法对船体内部加筋板进行极限强度影响参数研究。分析不同的初始挠度大小、焊接残余应力大小、模型范围、边界条件、有限元网格尺寸、材料应力应变曲线和侧压力对单轴受压加筋板极限强度的影响。通过对加筋板计算模型的参数进行研究可知,侧压力的存在和结构的初始挠度大小会对加筋板的极限强度产生显著影响,该研究可为加筋板极限强度计算模型的正确选择提供参考。The nonlinear finite element software ABAQUS is used and the hull arc length analysis method is used to analyze the ultimate strength of the stiffened plate inside the hull. The influence of different initial deformation degree, welding residual stress, different model range, boundary conditions, finite element mesh size,material stress-strain curve and lateral pressure on the ultimate strength of uniaxial compression stiffened plate is analyzed. Through the study of the parameters of the stiffened plate calculation model, the lateral pressure and the existence and the initial deformation degree of the structure will have a significant influence on the ultimate strength of the stiffened plate, which provides a reference for the correct selection of the ultimate strength calculation model of the stiffened plate.

关 键 词：船体结构 加筋板 极限强度 初始挠度 残余应力 侧压力 

分 类 号：U661.43[交通运输工程—船舶及航道工程]