Theoretical and experimental investigation of vibration characteristic of carbon nanotube reinforced polymer composite structure

IF 9.4 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences Pub Date : 2017-11-01 DOI:10.1016/j.ijmecsci.2017.08.057

Kulmani Mehar , Subrata Kumar Panda , Trupti Ranjan Mahapatra

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引用次数: 64

Abstract

The vibration frequencies of multi-walled carbon nanotube-reinforced polymer composite structure are examined numerically via a generic higher-order shear deformation kinematics for different panel geometries. The extensive behaviour of the current higher-order model is demonstrated by comparing the results with the published data including the own in-house experimental values. In this analysis, the required elastic properties of the randomly distributed nanotube-reinforced polymer composite panel are evaluated numerically using Mori–Tanaka scheme. Firstly, the equation of motion of the vibrated nanotube composite panel derived via the classical Hamilton's principle and the isoparametric finite element steps are implemented for the numerical purpose. Further, the modal responses are obtained computationally using an original computer code (MATLAB) with the help of the higher-order finite element formulation. The necessary convergence and subsequent comparison have been made for the presently developed numerical model with those available published results including the values obtained via commercial package (ANSYS). Additionally, the model validation has been established by comparing the present numerical frequency values with the lab-scale free vibration experimental data. The specific conclusions are drawn by examining different numerical examples for various structural parameters using the experimental properties.

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碳纳米管增强聚合物复合材料结构振动特性的理论与实验研究

采用通用的高阶剪切变形运动学方法对多壁碳纳米管增强聚合物复合材料结构的振动频率进行了数值分析。通过将结果与已发表的数据(包括自己的内部实验值)进行比较，证明了当前高阶模型的广泛行为。本文采用Mori-Tanaka格式对随机分布的纳米管增强聚合物复合材料板所需的弹性性能进行了数值计算。首先，利用经典的Hamilton原理和等参有限元步骤推导了振动纳米管复合板的运动方程，并对其进行了数值计算。在此基础上，利用MATLAB软件，结合高阶有限元公式，对结构的模态响应进行了计算。将目前开发的数值模型与现有的已发表的结果(包括通过商业软件包(ANSYS)获得的值)进行了必要的收敛和随后的比较。此外，通过将目前的数值频率值与实验室自由振动实验数据进行比较，建立了模型的有效性。利用实验特性对不同结构参数的数值算例进行了分析，得出了具体的结论。

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

International Journal of Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.