大开口双层板架模型屈曲失效简化方法研究  

Simplified method for buckling failure of a large opening double deck frame mode

作　　者：邢维升 贺双元[2] 闫小顺 骆伟[2] 梅国辉[2] 吴卫国[3] XING Wei-sheng;HE Shuang-yuan;YAN Xiao-shun;LUO Wei;MEI Guo-hui;WU Wei-guo(Military Representative Office of Navy Stationed in 426 Factory,Dalian 116005,China;China Ship Development and Design Center,Wuhan 430064,China;Departments of Naval Architecture,Ocean and Structural Engineering,School of Transportation,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]海军驻大连四二六厂军事代表室,辽宁大连116005 [2]中国舰船研究设计中心,湖北武汉430064 [3]武汉理工大学高性能舰船技术教育重点实验室,湖北武汉430063

出　　处：《舰船科学技术》2018年第7期29-35,共7页Ship Science and Technology

摘　　要：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 doubledeck 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.

关 键 词：大开口甲板 稳定性 非线性有限元 加筋板简化模型 

分 类 号：U663.6[交通运输工程—船舶及航道工程]