| 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 |
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| 引用本文： | 孟志光,王凡超,叶帆,吴剑国.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[J].船舶工程,2018,40(5):94-98. |
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| 作者姓名： | 孟志光 王凡超 叶帆 吴剑国 |
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| 作者单位： | 浙江工业大学建筑工程学院,杭州,310014;中国船舶及海洋工程设计研究院,上海,200011 |
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| 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。
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| 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 |
| 收稿时间： | 2017/12/15 0:00:00 |
| 修稿时间： | 2018/6/8 0:00:00 |
Research on Accumulation of Damage and Mechanical Model of the Stiffened Panel Element Under Cyclic Loading |
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| mengzhiguang,wangfanchao,yefan and wujianguo.Research on Accumulation of Damage and Mechanical Model of the Stiffened Panel Element Under Cyclic Loading[J].Ship Engineering,2018,40(5):94-98. |
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| Authors: | mengzhiguang wangfanchao yefan and wujianguo |
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| Institution: | Zhejiang University of Technology Institute of Architectural Engineering,Marine Design and Research Institute of China,Marine Design and Research Institute of China,Zhejiang University of Technology Institute of Architectural Engineering |
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| Abstract: | 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. |
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| Keywords: | cyclic loading the stiffened panel element accumulation of damage ultimate strength the stress-strain relationship |
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