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首页> 外文期刊>Engineering analysis with boundary elements >An element-free IMLS-Ritz framework for buckling analysis of FG-CNT reinforced composite thick plates resting on Winkler foundations
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An element-free IMLS-Ritz framework for buckling analysis of FG-CNT reinforced composite thick plates resting on Winkler foundations

机译：基于Winkler基础的FG-CNT增强复合材料厚板屈曲分析的无元素IMLS-Ritz框架

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摘要

An element-free based improved moving least squares-Ritz (IMLS-Ritz) method is proposed to study the buckling behavior of functionally graded nanocomposite plates reinforced by single-walled carbon nanotubes (SWCNTs) resting on Winkler foundations. The first-order shear deformation theory (FSDT) is employed to account for the effect of shear deformation of plates. The IMLS is used for construction of the two-dimensional displacement field. We derive the energy functional for moderately thick plates. By minimizing the energy functional via the Ritz method, solutions for the critical buckling load of the functionally graded carbon nanotube (FG-CNT) reinforced composite plates on elastic matrix are obtained. Numerical experiments are carried out to examine the effect of the Winkler modulus parameter on the critical buckling loads. The influences of boundary condition, plate thickness-to-width ratio, plate aspect ratio on the critical buckling loads are also investigated. It is found that FG-CNT reinforced composite plates with top and bottom surfaces of CNT-rich have the highest critical buckling loads.
机译：提出了一种基于无元素的改进的移动最小二乘-里兹（IMLS-Ritz）方法，以研究由Winkler地基上的单壁碳纳米管（SWCNT）增强的功能梯度纳米复合板的屈曲行为。一阶剪切变形理论（FSDT）用于说明板的剪切变形的影响。 IMLS用于构造二维位移场。我们推导了中厚板的能量函数。通过最小化通过Ritz方法的能量函数，获得了弹性矩阵上功能梯度碳纳米管（FG-CNT）增强复合板的临界屈曲载荷的解决方案。进行了数值实验，以检验Winkler模量参数对临界屈曲载荷的影响。还研究了边界条件，板厚宽比，板长宽比对临界屈曲载荷的影响。发现具有富含CNT的顶部和底部表面的FG-CNT增强复合板具有最高的临界屈曲载荷。

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  • 作者

    L.W. Zhang; Z.X. Lei; K.M. Liew;

  • 作者单位

    College of Information Technology, Shanghai Ocean University, Shanghai 201306, China,Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region;

    Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region,School of Sciences, Nanjing University of Science and Technology, Nanjing 210094, China;

    Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region,City University of Hong Kong Shenzhen Research Institute Building, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, China;

  • 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

    Buckling; Elastic foundation; Functionally graded carbon nanotube-reinforced composites; First-order shear deformation theory; Element-free IMLS-Ritz method;

    机译：屈曲;弹性基础;功能梯度碳纳米管增强复合材料;一阶剪切变形理论;无元素IMLS-Ritz方法;

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