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Buckling and vibration analysis of functionally graded composite structures using the finite element method

机译：功能梯度复合结构的屈曲和振动有限元分析

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摘要

The authors [Oyekoya 00, Mba DU, El-Zafrany AM. Structural integrity of functionally graded composite structure using Mindlin-type finite elements. ICCES 2008;172(l): 1-6] have previously written a paper on structural integrity of functionally graded composite (FGC) structure using Mindlin-type finite elements. In this paper, the Mindlin-type element and Reissner-type element have been further developed for the modelling of FGC plate subjected to buckling and free vibration. The Mindlin-type element formulation is based on averaging of transverse shear distribution over plate thickness using Lagrangian interpolation. The Reissner-type element formulation is based on parabolic transverse shear distribution over plate thickness using Lagrangian and Hermitian interpolation. The composite plate considered in this paper is functionally graded in the longitudinal direction only, but the FE code developed is capable of analysing composite plates with functional gradation in transverse and radial direction as well. This study was able to show that the structural integrity enhancement and strength maximisation of composite structures are achievable through functional gradation of material properties over the structure.
机译：作者[Oyekoya 00，Mba DU，El-Zafrany AM。使用Mindlin型有限元的功能梯度复合结构的结构完整性。 ICCES 2008； 172（1）：1-6]之前已经写了一篇关于使用Mindlin型有限元的功能梯度复合材料（FGC）结构的结构完整性的论文。本文进一步开发了Mindlin型单元和Reissner型单元，以对受屈曲和自由振动的FGC板进行建模。 Mindlin型元素公式是基于使用拉格朗日插值法对板厚度上的横向剪切分布进行平均得出的。 Reissner型元素公式是基于拉格朗日和埃尔米特插值法在板厚上的抛物线形横向剪切分布。本文中考虑的复合板仅在纵向上进行功能分级，但是开发的FE代码也能够分析在横向和径向上具有功能梯度的复合板。这项研究能够表明，通过结构上材料特性的功能分级，可以实现复合结构的结构完整性增强和强度最大化。

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  • 来源
    《Composite Structures》 |2009年第1期|134-142|共9页
  • 作者

    O.O. Oyekoya; D.U. Mba; A.M. El-Zafrany;

  • 作者单位

    Department of Structures Impact and Machine Dynamics, School of Engineering, Cranfield University, Cranfield, Bedfordshire MK43 OAL, England, United Kingdom;

    Department of Structures Impact and Machine Dynamics, School of Engineering, Cranfield University, Cranfield, Bedfordshire MK43 OAL, England, United Kingdom;

    Department of Structures Impact and Machine Dynamics, School of Engineering, Cranfield University, Cranfield, Bedfordshire MK43 OAL, England, United Kingdom;

  • 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

    functionally graded material; finite element methods; mindlin-type element; reissner-type element; finite strain; progressive damage analysis;

    机译：功能分级材料;有限元方法Mindlin型元素;Reissner型元件;有限应变渐进式损伤分析;

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