Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching

Due to the need for structures with refined properties to bear against different loading conditions, recently, carbon nanotubes (CNTs) have been used widely to reinforce them. The extremely high stiffness of CNTs makes them significant as one of the best reinforcements to improve the mechanical beha...

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Autor principal:	Alkhedher Mohammad
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	buckling analysis cnts curved beams rsdt mcst Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/dc76ed3219164c9aa7286904dc247bfc
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spelling	oai:doaj.org-article:dc76ed3219164c9aa7286904dc247bfc2021-12-05T14:10:58ZHygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching2191-909710.1515/ntrev-2021-0076https://doaj.org/article/dc76ed3219164c9aa7286904dc247bfc2021-09-01T00:00:00Zhttps://doi.org/10.1515/ntrev-2021-0076https://doaj.org/toc/2191-9097Due to the need for structures with refined properties to bear against different loading conditions, recently, carbon nanotubes (CNTs) have been used widely to reinforce them. The extremely high stiffness of CNTs makes them significant as one of the best reinforcements to improve the mechanical behaviors of structures. This work focuses on microbeam buckling response with an initial curvature that includes three layers. The mid-layer that is known as the core is constituted of functionally graded porous (FGP) materials and two CNT-reinforced composite skins are bonded to the core to integrate it. The whole structure is affected by the hygrothermal environment and springs and shear layers are put below it. For the first time, for such a structure, a refined shear deformation theory (RSDT) as a higher-order theory that considers thickness stretching effect in polar coordinates is used that presents more accurate results, especially for deeply curved beams. Modified couple stress theory (MCST) in combination with the virtual displacement principle is utilized to establish the governing equations. The obtained results demonstrate the significance of porosity percentage and CNTs’ addition to the skins on the critical nanotubes buckling load. Also, the different behaviors of the microstructure at various temperatures are analyzed and discussed in detail.Alkhedher MohammadDe Gruyterarticlebuckling analysiscntscurved beamsrsdtmcstTechnologyTChemical technologyTP1-1185Physical and theoretical chemistryQD450-801ENNanotechnology Reviews, Vol 10, Iss 1, Pp 1140-1156 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	buckling analysis cnts curved beams rsdt mcst Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
spellingShingle	buckling analysis cnts curved beams rsdt mcst Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 Alkhedher Mohammad Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching
description	Due to the need for structures with refined properties to bear against different loading conditions, recently, carbon nanotubes (CNTs) have been used widely to reinforce them. The extremely high stiffness of CNTs makes them significant as one of the best reinforcements to improve the mechanical behaviors of structures. This work focuses on microbeam buckling response with an initial curvature that includes three layers. The mid-layer that is known as the core is constituted of functionally graded porous (FGP) materials and two CNT-reinforced composite skins are bonded to the core to integrate it. The whole structure is affected by the hygrothermal environment and springs and shear layers are put below it. For the first time, for such a structure, a refined shear deformation theory (RSDT) as a higher-order theory that considers thickness stretching effect in polar coordinates is used that presents more accurate results, especially for deeply curved beams. Modified couple stress theory (MCST) in combination with the virtual displacement principle is utilized to establish the governing equations. The obtained results demonstrate the significance of porosity percentage and CNTs’ addition to the skins on the critical nanotubes buckling load. Also, the different behaviors of the microstructure at various temperatures are analyzed and discussed in detail.
format	article
author	Alkhedher Mohammad
author_facet	Alkhedher Mohammad
author_sort	Alkhedher Mohammad
title	Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching
title_short	Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching
title_full	Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching
title_fullStr	Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching
title_full_unstemmed	Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching
title_sort	hygrothermal environment effect on the critical buckling load of fgp microbeams with initial curvature integrated by cnt-reinforced skins considering the influence of thickness stretching
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/dc76ed3219164c9aa7286904dc247bfc
work_keys_str_mv	AT alkhedhermohammad hygrothermalenvironmenteffectonthecriticalbucklingloadoffgpmicrobeamswithinitialcurvatureintegratedbycntreinforcedskinsconsideringtheinfluenceofthicknessstretching
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Hygrothermal environment effect on the critical buckling load of FGP microbeams with initial curvature integrated by CNT-reinforced skins considering the influence of thickness stretching

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