The influence of graphene platelet with different dispersions on the vibrational behavior of nanocomposite truncated conical shells

IF 4 3区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Steel and Composite Structures Pub Date : 2021-01-01 DOI:10.12989/SCS.2021.38.1.047

M. Khayat, A. Baghlani, S. Dehghan, M. Najafgholipour

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引用次数: 13

Abstract

This work addresses the free vibration analysis of Functionally Graded Porous (FGP) nanocomposite truncated conical shells with Graphene PLatelet (GPL) reinforcement. In this study, three different distributions for porosity and three different dispersions for graphene platelets have been considered in the direction of the shell thickness. The Halpin–Tsai equations are used to find the effective material properties of the graphene platelet reinforced materials. The equations of motion are derived based on the higher-order shear deformation theory and Sanders's theory. The Fourier Differential Quadrature (FDQ) technique is implemented to solve the governing equations of the problem and to obtain the natural frequencies of the truncated conical shell. The combination of FDQ with higher-order shear deformation theory allows a very accurate prediction of the natural frequencies. The precision and reliability of the proposed method are verified by the results of literature. Moreover, a wide parametric study concerning the effect of some influential parameters, such as the geometrical parameters, porosity distribution, circumferential wave numbers, GPLs dispersion as well as boundary restraint conditions on free vibration response of FGP-GPL truncated conical shell is also carried out and investigated in detail.

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不同分散度的石墨烯血小板对纳米复合材料截锥形壳振动行为的影响

本文研究了石墨烯血小板(GPL)增强的功能梯度多孔(FGP)纳米复合材料截顶锥形壳的自由振动分析。在本研究中，考虑了石墨烯薄片在壳厚方向上的三种不同的孔隙度分布和三种不同的分散。利用Halpin-Tsai方程求解石墨烯血小板增强材料的有效材料性能。基于高阶剪切变形理论和桑德斯理论推导了运动方程。利用傅里叶微分正交(FDQ)技术求解了该问题的控制方程，得到了截顶圆锥壳的固有频率。FDQ与高阶剪切变形理论的结合可以非常准确地预测固有频率。文献结果验证了该方法的精度和可靠性。此外，还对几何参数、孔隙度分布、周向波数、gpl色散以及边界约束条件等影响FGP-GPL截顶锥形壳自由振动响应的影响进行了广泛的参数化研究。

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来源期刊

Steel and Composite Structures 工程技术-材料科学：复合

CiteScore

8.50

自引率

19.60%

发文量

审稿时长

7.5 months

期刊介绍： Steel & Composite Structures, An International Journal, provides and excellent publication channel which reports the up-to-date research developments in the steel structures and steel-concrete composite structures, and FRP plated structures from the international steel community. The research results reported in this journal address all the aspects of theoretical and experimental research, including Buckling/Stability, Fatigue/Fracture, Fire Performance, Connections, Frames/Bridges, Plates/Shells, Composite Structural Components, Hybrid Structures, Fabrication/Maintenance, Design Codes, Dynamics/Vibrations, Nonferrous Metal Structures, Non-metalic plates, Analytical Methods. The Journal specially wishes to bridge the gap between the theoretical developments and practical applications for the benefits of both academic researchers and practicing engineers. In this light, contributions from the practicing engineers are especially welcome.