Buckling and postbuckling behavior of functionally graded nanotube-reinforced composite plates in thermal environments
Hui-Shen Shen,Zheng H. Zhu +1 more
95
TL;DR: In this paper, the buckling and postbuckling of simply supported, nanocomposite plates with functionally graded nanotube reinforcements subjected to uniaxial compression in thermal environments were investigated.
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Abstract: This paper investigates the buckling and postbuckling of simply supported, nanocomposite plates with functionally graded nanotube reinforcements subjected to uniaxial compression in thermal environments. The nanocomposite plates are assumed to be functionally graded in the thickness direction using singlewalled carbon nanotubes (SWCNTs) serving as reinforcements and the plates’ effective material properties are estimated through a micromechanical model. The higher order shear deformation plate theory with a von Kármán-type of kinematic nonlinearity is used to model the composite plates and a two-step perturbation technique is performed to determine the buckling loads and postbuckling equilibrium paths. Numerical results for perfect and imperfect, geometrically mid-plane symmetric functionally graded carbon nanotube reinforced composite (FG-CNTRC) plates are obtained under different sets of thermal environmental conditions. The results for uniformly distributed CNTRC plate, which is a special case in the present study, are compared with those of the FG-CNTRC plate. The results show that the buckling loads as well as postbuckling strength of the plate can be significantly increased as a result of a functionally graded nanotube reinforcement. The results reveal that the carbon nanotube volume fraction has a significant effect on the buckling load and postbuckling behavior of CNTRC plates.
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Citations
Buckling of FG-CNT-reinforced composite plates subjected to parabolic loading
TL;DR: In this article, the buckling loads and buckling pattern of composite plates reinforced with carbon nanotubes with uniform or functionally graded distribution across the plate thickness were obtained based on a modified rule of mixtures approach with the introduction of efficiency parameters.
Experimental investigation and analytical verification of buckling of functionally graded carbon nanotube-reinforced sandwich beams
Emrah Madenci,Yasin Onuralp Özkılıç,Alireza Bahrami,Ceyhun Aksoylu,M. R. M. Asyraf,Ibrahim Hakeem,Alexey Beskopylny,Sergey A. Stel’makh,Evgeniy Shcherban,Sabry Fayed +9 more
TL;DR: This study experimentally and analytically investigates the buckling response of functionally graded carbon nanotube-reinforced composite sandwich beams, demonstrating a 37.7% increase in buckling load with CNT reinforcement and a 0.49%-4.92% difference between analytical and experimental results.
Using an equivalent continuum model for 3D dynamic analysis of nanocomposite plates
TL;DR: In this article, an equivalent continuum model based on the Eshelby-Mori-Tanaka approach is employed to estimate the effective constitutive law of the elastic isotropic medium with oriented, straight carbon nanotubes (CNTs).
A closed form dynamic stiffness formulation for buckling analysis of FG-CNTRC plate and plate assemblies with internal line support
Raj Kumar,Prasun Jana +1 more
TL;DR: This study adapts the dynamic stiffness method for buckling analysis of carbon-nanotube reinforced composite plates with internal line support, deriving a closed-form dynamic stiffness formulation for various configurations under uniaxial and biaxial loads.
Static Buckling and Free Vibration Analysis of Aligned CNTs Reinforced Composite Plates
Pham Dinh Nguyen,Do Thi Thu Ha,Duong Manh Tuan +2 more
- 23 Dec 2023
TL;DR: The nonlinear buckling and free vibration behavior of aligned CNTs reinforced composite plates is analyzed numerically. The effects of carbon nanotube distribution, volume fraction, and geometrical parameters on the buckling load and fundamental frequency parameters are investigated.
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