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Investigation of Mechanical Behaviors of Functionally Graded CNT-Reinforced Composite Plates

In this paper, the mechanical behavior of a functionally graded carbon nanotube-reinforced composite (FG-CNTRC) plate is numerically investigated. According to the concept of a hierarchical model, the displacement is decomposed into the in-field functions and the assumed thickness-wise monomial. The...

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Autores principales: Cho, Jin-Rae, Ahn, Young-Ju
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269440/
https://www.ncbi.nlm.nih.gov/pubmed/35808708
http://dx.doi.org/10.3390/polym14132664
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author Cho, Jin-Rae
Ahn, Young-Ju
author_facet Cho, Jin-Rae
Ahn, Young-Ju
author_sort Cho, Jin-Rae
collection PubMed
description In this paper, the mechanical behavior of a functionally graded carbon nanotube-reinforced composite (FG-CNTRC) plate is numerically investigated. According to the concept of a hierarchical model, the displacement is decomposed into the in-field functions and the assumed thickness-wise monomial. The former is defined on the plate midsurface and is approximated by the 2-D meshfree natural element method (NEM). The FG-CNTRC plate is modeled as a homogenized orthotropic body, and its effective elastic properties are determined by referring to MD simulation and the linear rule of mixtures. Regarding the thickness-wise distribution of CNTs, one uniform and three functionally gradient distributions are taken. Through comparative numerical experiments, the reliability of the numerical method is justified with the maximum relative difference of 6.12%. The effects of the volume fraction and vertical distribution of CNTs, the plate width-thickness and aspect ratios, and the boundary conditions on the bending, free vibration, and buckling behaviors of FG-CNTRC plates are examined. It is found that the mechanical behavior of FG-CNTRC plates is significantly dependent of these major parameters.
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spelling pubmed-92694402022-07-09 Investigation of Mechanical Behaviors of Functionally Graded CNT-Reinforced Composite Plates Cho, Jin-Rae Ahn, Young-Ju Polymers (Basel) Article In this paper, the mechanical behavior of a functionally graded carbon nanotube-reinforced composite (FG-CNTRC) plate is numerically investigated. According to the concept of a hierarchical model, the displacement is decomposed into the in-field functions and the assumed thickness-wise monomial. The former is defined on the plate midsurface and is approximated by the 2-D meshfree natural element method (NEM). The FG-CNTRC plate is modeled as a homogenized orthotropic body, and its effective elastic properties are determined by referring to MD simulation and the linear rule of mixtures. Regarding the thickness-wise distribution of CNTs, one uniform and three functionally gradient distributions are taken. Through comparative numerical experiments, the reliability of the numerical method is justified with the maximum relative difference of 6.12%. The effects of the volume fraction and vertical distribution of CNTs, the plate width-thickness and aspect ratios, and the boundary conditions on the bending, free vibration, and buckling behaviors of FG-CNTRC plates are examined. It is found that the mechanical behavior of FG-CNTRC plates is significantly dependent of these major parameters. MDPI 2022-06-29 /pmc/articles/PMC9269440/ /pubmed/35808708 http://dx.doi.org/10.3390/polym14132664 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cho, Jin-Rae
Ahn, Young-Ju
Investigation of Mechanical Behaviors of Functionally Graded CNT-Reinforced Composite Plates
title Investigation of Mechanical Behaviors of Functionally Graded CNT-Reinforced Composite Plates
title_full Investigation of Mechanical Behaviors of Functionally Graded CNT-Reinforced Composite Plates
title_fullStr Investigation of Mechanical Behaviors of Functionally Graded CNT-Reinforced Composite Plates
title_full_unstemmed Investigation of Mechanical Behaviors of Functionally Graded CNT-Reinforced Composite Plates
title_short Investigation of Mechanical Behaviors of Functionally Graded CNT-Reinforced Composite Plates
title_sort investigation of mechanical behaviors of functionally graded cnt-reinforced composite plates
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269440/
https://www.ncbi.nlm.nih.gov/pubmed/35808708
http://dx.doi.org/10.3390/polym14132664
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