本文开展了含大开口结构的双层板架模型轴向受压稳定性实验，采用非线性有限元软件ABAQUS，建立了甲板大开口双层板架模型，开展了该模型在轴向压缩载荷作用下的屈曲失效过程的数值计算分析，数值计算结果和试验吻合较好。在此基础上，根据甲板结构屈曲失效诱因，将双层板架模型简化为单层板架局部模型，并分析了简化模型在轴向载荷作用下的屈曲破坏路径与极限承载能力。结果表明，简化后的加筋板模型能有效模拟双层板架模型的失效模式，为大开口甲板板架稳定性分析提供了新思路。
The axial compression stability experiment of the double-deck model with a large open structure was carried out in this paper. The non-linear finite element software ABAQUS was used to establish the double deck model with large open deck. The nonlinear finite element calculation was conducted under the axial compressive loading. The numerical results agree well with the experimental results. On this basis, according to the buckling failure of the deck structure, the double-deck model is simplified; the buckling failure path and ultimate strength under the axial load are compared between the single-deck frame and the stiffened plate model. The results show that the simplified stiffened model can simulate the failure mode of the double model effectively, and provide a new idea for the stability analysis of large open deck frame.
2018,40(7): 29-35 收稿日期：2018-03-07
DOI：10.3404/j.issn.1672-7649.2018.07.006
分类号：U663.6
作者简介：邢维升(1977-),男,工程师,研究方向为船舶总体与结构
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