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Post-buckling behavior of imperfect laminated composite plates with rotationally-restrained edges

机译：带有旋转约束边缘的不完善层压复合板的屈曲后行为

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摘要

The nonlinear governing equations of rotationally-restrained laminated composite plates with imperfection are presented by the Galerkin method, and they are solved by employing the Newton-Raphson method for the post-buckling analysis. The considered laminates are symmetric, and they are loaded in pure in-plane shear or combined in-plane shear and compression. The deformation shape function of the restrained plates is obtained through a linear combination of vibration eigenfunctions of simply supported and clamped beams along either the longitudinal or transverse direction of plates. The validity study shows that the presented method is effective for performing the nonlinear analysis of laminates with all four edges elastically-restrained against rotation. A parametric study is conducted to evaluate the effect of rotational spring stiffness, material properties, and fiber orientation under pure in-plane shear as well as the loading ratio under combined shear and compression on the nonlinear static and post-budding behavior of rotationally-restrained laminates. The proposed solution for nonlinear static analysis of rotationally-restrained composite plates with imperfection is accurate and effective, as demonstrated by the comparisons with the predictions by the finite element analysis, and combined with the discrete plate analysis technique, it can be potentially applied to post-buckling analysis of FRP structural shapes. (C) 2015 Elsevier Ltd. All rights reserved.
机译：用Galerkin方法给出了具有缺陷的旋转约束层合板的非线性控制方程，并通过Newton-Raphson方法进行了屈曲后分析。所考虑的层压板是对称的，它们以纯面内剪切或组合面内剪切和压缩方式加载。约束板的变形形状函数是通过沿板的纵向或横向简单地支撑和夹紧梁的振动本征函数的线性组合而获得的。有效性研究表明，所提出的方法可有效地对所有四个边缘均受弹性约束而不能旋转的层压板进行非线性分析。进行了参数研究，以评估纯面内剪切下的旋转弹簧刚度，材料特性和纤维取向以及组合剪切和压缩下的加载比对旋转约束的非线性静态和回弹行为的影响层压板。通过有限元分析与预测结果进行比较，并结合离散板分析技术，可以证明所提出的具有缺陷的旋转约束复合板非线性静力分析的解决方案准确有效。玻璃钢结构形状的屈曲分析。 （C）2015 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Composite Structures》 |2015年第7期|117-126|共10页
  • 作者

    Chen Qingyuan; Qiao Pizhong;

  • 作者单位

    Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China|Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China|Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, Shanghai 200240, Peoples R China|Washington State Univ, Dept Civil & Environm Engn, Pullman, WA 99164 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nonlinear static analysis; Post-buckling; Rotationally-restrained laminates; Galerkin method; In-plane shear loading; Combined in-plane loading;

    机译：非线性静力分析;后屈曲;旋转约束层合板;Galerkin法;面内剪切荷载;组合面内荷载;

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