循环荷载作用下加筋板格单元的损伤累积及力学模型研究  

Research on Accumulation of Damage and Mechanical Model of Stiffened Panel Element under Cyclic Loading

作　　者：孟志光 王凡超[2] 叶帆 吴剑国[1] MENG Zhiguangl;WANG Fanchao;YE Fan;WU Jianguo(College of Architectural and Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China;Marine Design ＆ Research Institute of China, Shanghai 200011, China)

机构地区：[1]浙江工业大学建筑工程学院,杭州310014 [2]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船舶工程》2018年第5期94-98,共5页Ship Engineering

摘　　要：为了计算加筋板和船体梁在循环荷载作用下的极限强度,将一种能够考虑损伤累积和构件局部屈曲的一维钢材等效本构模型引入到加筋板格单元中,提出加筋板格单元在轴向循环荷载作用下的损伤累积力学模型,采用Visual Basic程序编制了计算程序,对若干加筋板格单元在双向轴向循环荷载作用下的承载性能进行计算研究,并使用非线性有限元软件Abaqus进行对比验证,结果表明所提理论方法具有较好的精度。A one-dimensional equivalent constitutive model of steel with accumulation of damage and local buckling of component is used in the stiffened panel element to propose the bidirectional axial cyclic mechanical model of the stiffened panel element for calculating the ultimate strength of the stiffened panel and ship hull girder under cyclic loading. The theoretical method is programmed with Visual Basic procedure, and several load carrying capacities of the stiffened panel element under bidirectional axial cyclic loading are analyzed and calculated, compared by the calculation of the nonlinear finite element software Abaqus. The results show that the theoretical method has good accuracy.

关 键 词：循环荷载 加筋板格单元 损伤累积 极限强度 应力-应变关系 

分 类 号：U668.1[交通运输工程—船舶及航道工程]