Vibration analysis of CNT reinforced functionally graded composite plates in a thermal environment based on Reddy's higher-order shear deformation theory
Vibration analysis of CNT reinforced functionally graded composite plates in a thermal environment based on Reddy's higher-order shear deformation theory
复制标题
基于Reddy高阶剪切变形理论的CNT增强功能梯度复合材料板在热环境下的振动分析
DOI：
10.1016/j.compstruct.2015.10.026
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发表时间：
2016-11-15
影响因子：
6.3
通讯作者：
Liew, K. M.
中科院分区：
文献类型：
--
作者：
Selim, B. A.;Zhang, L. W.;Liew, K. M.
基于Reddy高阶剪切变形理论，研究了碳纳米管(CNT)增强功能梯度复合材料板在热环境中的自由振动行为。本文采用的是无单元KP-Ritz方法。考虑了四种不同类型的CNT分布。文献表明，在研究碳纳米管增强功能梯度复合材料板的力学行为时，采用Reddy‘s HSDT和任何一种无网格法都是一个空白。据作者所知，本文首次用这种方法研究了碳纳米管增强功能梯度复合材料板在热环境中的振动行为。混合规则被用来估计得到的有效材料性质。为了验证本模型的可靠性，将基于转换研究的数值结果与文献中的结果进行了比较，两者明显吻合。此外，还研究了碳纳米管分布、边界条件、板长宽比、板厚宽比和碳纳米管体积分数对无量纲固有频率的影响。此外，还研究了板长宽比和板厚宽比对前六阶振型顺序的影响。(C)2015爱思唯尔有限公司。保留所有权利。
This paper presents the free vibration behavior of carbon nanotube (CNT) reinforced functionally graded composite plates in a thermal environment based on Reddy's higher-order shear deformation theory (HSDT). The element-free kp-Ritz method is used in this study. Four different types of CNT distributions are considered. The literature reveals that there is a research gap in investigating the mechanical behaviors of CNT reinforced functionally graded composite plates using Reddy's HSDT in association with any of the mesh-free methods. To the authors' knowledge, this paper is the first to use this approach to investigate the vibration behavior of CNT reinforced functionally graded composite plates in a thermal environment. The rule of mixture is used to estimate the resulting effective material properties. To verify the reliability of the present model, the obtained numerical results based on a conversion study have been compared with those found in the literature with evident agreement. Moreover, parametric studies have been conducted on the effects of CNT distribution, boundary conditions, plate aspect ratio, plate thickness-to-width ratio and CNT volume fraction on the non-dimensional natural frequencies. Furthermore, the effects of plate aspect ratio and plate thickness-to-width ratio on the sequence of the first six mode shapes have been investigated. (C) 2015 Elsevier Ltd. All rights reserved.