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Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems

This paper proposes a novel nanobar–substrate medium model for static and free vibration analyses of single-walled carbon nanotube (SWCNT) systems embedded in the elastic substrate medium. The modified strain-gradient elasticity theory is utilized to account for the material small-scale effect, whil...

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Autores principales: Limkatanyu, Suchart, Sae-Long, Worathep, Mohammad-Sedighi, Hamid, Rungamornrat, Jaroon, Sukontasukkul, Piti, Imjai, Thanongsak, Zhang, Hexin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9145732/
https://www.ncbi.nlm.nih.gov/pubmed/35630962
http://dx.doi.org/10.3390/nano12101740
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author Limkatanyu, Suchart
Sae-Long, Worathep
Mohammad-Sedighi, Hamid
Rungamornrat, Jaroon
Sukontasukkul, Piti
Imjai, Thanongsak
Zhang, Hexin
author_facet Limkatanyu, Suchart
Sae-Long, Worathep
Mohammad-Sedighi, Hamid
Rungamornrat, Jaroon
Sukontasukkul, Piti
Imjai, Thanongsak
Zhang, Hexin
author_sort Limkatanyu, Suchart
collection PubMed
description This paper proposes a novel nanobar–substrate medium model for static and free vibration analyses of single-walled carbon nanotube (SWCNT) systems embedded in the elastic substrate medium. The modified strain-gradient elasticity theory is utilized to account for the material small-scale effect, while the Gurtin–Murdoch surface theory is employed to represent the surface energy effect. The Winkler foundation model is assigned to consider the interactive mechanism between the nanobar and its surrounding substrate medium. Hamilton’s principle is used to consistently derive the system governing equation, initial conditions, and classical as well as non-classical boundary conditions. Two numerical simulations are employed to demonstrate the essence of the material small-scale effect, the surface energy effect, and the surrounding substrate medium on static and free vibration responses of single-walled carbon nanotube (SWCNT)–substrate medium systems. The simulation results show that the material small-scale effect, the surface energy effect, and the interaction between the substrate and the structure led to a system-stiffness enhancement both in static and free vibration analyses.
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spelling pubmed-91457322022-05-29 Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems Limkatanyu, Suchart Sae-Long, Worathep Mohammad-Sedighi, Hamid Rungamornrat, Jaroon Sukontasukkul, Piti Imjai, Thanongsak Zhang, Hexin Nanomaterials (Basel) Article This paper proposes a novel nanobar–substrate medium model for static and free vibration analyses of single-walled carbon nanotube (SWCNT) systems embedded in the elastic substrate medium. The modified strain-gradient elasticity theory is utilized to account for the material small-scale effect, while the Gurtin–Murdoch surface theory is employed to represent the surface energy effect. The Winkler foundation model is assigned to consider the interactive mechanism between the nanobar and its surrounding substrate medium. Hamilton’s principle is used to consistently derive the system governing equation, initial conditions, and classical as well as non-classical boundary conditions. Two numerical simulations are employed to demonstrate the essence of the material small-scale effect, the surface energy effect, and the surrounding substrate medium on static and free vibration responses of single-walled carbon nanotube (SWCNT)–substrate medium systems. The simulation results show that the material small-scale effect, the surface energy effect, and the interaction between the substrate and the structure led to a system-stiffness enhancement both in static and free vibration analyses. MDPI 2022-05-19 /pmc/articles/PMC9145732/ /pubmed/35630962 http://dx.doi.org/10.3390/nano12101740 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
Limkatanyu, Suchart
Sae-Long, Worathep
Mohammad-Sedighi, Hamid
Rungamornrat, Jaroon
Sukontasukkul, Piti
Imjai, Thanongsak
Zhang, Hexin
Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems
title Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems
title_full Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems
title_fullStr Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems
title_full_unstemmed Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems
title_short Static and Free Vibration Analyses of Single-Walled Carbon Nanotube (SWCNT)–Substrate Medium Systems
title_sort static and free vibration analyses of single-walled carbon nanotube (swcnt)–substrate medium systems
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9145732/
https://www.ncbi.nlm.nih.gov/pubmed/35630962
http://dx.doi.org/10.3390/nano12101740
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