Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment

Due to the widespread use of sandwich structures in many industries and the importance of understanding their mechanical behavior, this paper studies the thermomechanical buckling behavior of sandwich beams with a functionally graded material (FGM) middle layer and two composite external layers. Bot...

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Autores principales:	Mohammad Khorasani, Luca Lampani, Rossana Dimitri, Francesco Tornabene
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	CNTs FGMs high-order shear deformation theories hygrothermal environment thermomechanical buckling sandwich beams Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/5b179d70331b462ca115c2d4770fd0e0
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id	oai:doaj.org-article:5b179d70331b462ca115c2d4770fd0e0
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spelling	oai:doaj.org-article:5b179d70331b462ca115c2d4770fd0e02021-11-11T18:34:12ZThermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment10.3390/molecules262165941420-3049https://doaj.org/article/5b179d70331b462ca115c2d4770fd0e02021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6594https://doaj.org/toc/1420-3049Due to the widespread use of sandwich structures in many industries and the importance of understanding their mechanical behavior, this paper studies the thermomechanical buckling behavior of sandwich beams with a functionally graded material (FGM) middle layer and two composite external layers. Both composite skins are made of Poly(methyl methacrylate) (PMMA) reinforced by carbon-nano-tubes (CNTs). The properties of the FGM core are predicted through an exponential-law and power-law theory (E&P), whereas an Eshelby–Mori–Tanaka (EMT) formulation is applied to capture the mechanical properties of the external layers. Moreover, different high-order displacement fields are combined with a virtual displacement approach to derive the governing equations of the problem, here solved analytically based on a Navier-type approximation. A parametric study is performed to check for the impact of different core materials and CNT concentrations inside the PMMA on the overall response of beams resting on a Pasternak substrate and subjected to a hygrothermal loading. This means that the sensitivity analysis accounts for different displacement fields, hygrothermal environments, and FGM theories, as a novel aspect of the present work. Our results could be replicated in a computational sense, and could be useful for design purposes in aerospace industries to increase the tolerance of target productions, such as aircraft bodies.Mohammad KhorasaniLuca LampaniRossana DimitriFrancesco TornabeneMDPI AGarticleCNTsFGMshigh-order shear deformation theorieshygrothermal environmentthermomechanical bucklingsandwich beamsOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6594, p 6594 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	CNTs FGMs high-order shear deformation theories hygrothermal environment thermomechanical buckling sandwich beams Organic chemistry QD241-441
spellingShingle	CNTs FGMs high-order shear deformation theories hygrothermal environment thermomechanical buckling sandwich beams Organic chemistry QD241-441 Mohammad Khorasani Luca Lampani Rossana Dimitri Francesco Tornabene Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment
description	Due to the widespread use of sandwich structures in many industries and the importance of understanding their mechanical behavior, this paper studies the thermomechanical buckling behavior of sandwich beams with a functionally graded material (FGM) middle layer and two composite external layers. Both composite skins are made of Poly(methyl methacrylate) (PMMA) reinforced by carbon-nano-tubes (CNTs). The properties of the FGM core are predicted through an exponential-law and power-law theory (E&P), whereas an Eshelby–Mori–Tanaka (EMT) formulation is applied to capture the mechanical properties of the external layers. Moreover, different high-order displacement fields are combined with a virtual displacement approach to derive the governing equations of the problem, here solved analytically based on a Navier-type approximation. A parametric study is performed to check for the impact of different core materials and CNT concentrations inside the PMMA on the overall response of beams resting on a Pasternak substrate and subjected to a hygrothermal loading. This means that the sensitivity analysis accounts for different displacement fields, hygrothermal environments, and FGM theories, as a novel aspect of the present work. Our results could be replicated in a computational sense, and could be useful for design purposes in aerospace industries to increase the tolerance of target productions, such as aircraft bodies.
format	article
author	Mohammad Khorasani Luca Lampani Rossana Dimitri Francesco Tornabene
author_facet	Mohammad Khorasani Luca Lampani Rossana Dimitri Francesco Tornabene
author_sort	Mohammad Khorasani
title	Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment
title_short	Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment
title_full	Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment
title_fullStr	Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment
title_full_unstemmed	Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment
title_sort	thermomechanical buckling analysis of the e&p-fgm beams integrated by nanocomposite supports immersed in a hygrothermal environment
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5b179d70331b462ca115c2d4770fd0e0
work_keys_str_mv	AT mohammadkhorasani thermomechanicalbucklinganalysisoftheepfgmbeamsintegratedbynanocompositesupportsimmersedinahygrothermalenvironment AT lucalampani thermomechanicalbucklinganalysisoftheepfgmbeamsintegratedbynanocompositesupportsimmersedinahygrothermalenvironment AT rossanadimitri thermomechanicalbucklinganalysisoftheepfgmbeamsintegratedbynanocompositesupportsimmersedinahygrothermalenvironment AT francescotornabene thermomechanicalbucklinganalysisoftheepfgmbeamsintegratedbynanocompositesupportsimmersedinahygrothermalenvironment
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Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment

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