Nonlinear forced vibration analysis of FG-CNTRC plates based on the 3D elasticity

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES
Y. Gholami , R. Ansari , H. Rouhi
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引用次数: 0

Abstract

In this article, an efficient numerical approach is developed to study the primary resonant dynamics of rectangular plates with arbitrary boundary conditions made of functionally graded carbon nanotube-reinforced composites (FG-CNTRCs). The problem is formulated in the context of three-dimensional (3D) elasticity theory. Also, a variational approach based on Hamilton’s principle together with the variational differential quadrature (VDQ) method is proposed to obtain the discretized governing equations on space domain. Then, the solution procedure on the time domain is completed using the numerical Galerkin method, time periodic discretization method and pseudo arc-length continuation algorithm in order to find the frequency-response curves. It is considered that CNTs are distributed in the thickness direction based on an FG manner considering different patterns. After testing the convergence and validity of developed approach, numerical results are presented to investigate the influences of geometrical properties, CNT’s volume fraction and distribution pattern on the nonlinear forced vibration response of plates.
基于三维弹性的FG-CNTRC板非线性强迫振动分析
本文提出了一种有效的数值方法来研究由功能梯度碳纳米管增强复合材料(FG-CNTRCs)制成的具有任意边界条件的矩形板的主共振动力学。该问题是在三维(3D)弹性理论的背景下制定的。在此基础上,提出了基于Hamilton原理的变分方法与变分微分求积(VDQ)方法相结合的空间域离散化控制方程求解方法。然后,利用数值伽辽金法、时间周期离散化法和伪弧长延拓算法完成时域上的求解过程,求出频率响应曲线。认为碳纳米管在厚度方向上以FG方式分布,考虑了不同的模式。在验证该方法的收敛性和有效性后,给出了几何特性、碳纳米管体积分数和分布模式对板的非线性强迫振动响应的影响的数值结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Composites Part C Open Access
Composites Part C Open Access Engineering-Mechanical Engineering
CiteScore
8.60
自引率
2.40%
发文量
96
审稿时长
55 days
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