Imperfection and tangential edge constraint sensitivities of thermomechanical nonlinear response of pressure-loaded carbon nanotube-reinforced composite cylindrical panels.

Saved in:

Bibliographic Details
Title:	Imperfection and tangential edge constraint sensitivities of thermomechanical nonlinear response of pressure-loaded carbon nanotube-reinforced composite cylindrical panels.
Authors:	Van Tung, Hoang¹ hoangtung0105@gmail.com, Trang, Le Thi Nhu²
Source:	Acta Mechanica. May2018, Vol. 229 Issue 5, p1949-1969. 21p.
Subjects:	Contact transformations, Tangential coordinates, Carbon nanotubes, Galerkin methods, Finite element method
Abstract:	Initial geometrical imperfection and elasticity of tangential edge constraints are inherent in real structures in general and composite cylindrical panels in particular. This paper investigates the nonlinear response of functionally graded nanocomposite cylindrical panels reinforced by single-walled carbon nanotubes (SWCNTs), exposed to thermal environments and subjected to uniform external pressure. The material properties of functionally graded carbon nanotube-reinforced composites (FG-CNTRC) are assumed to be temperature dependent, graded in the thickness direction, and are estimated by the extended rule of mixture through a micromechanical model. The governing equations are based on classical shell theory taking von Kármán-Donnell nonlinearity, initial geometrical imperfection and tangential constraints of boundary edges into consideration. Approximate solutions of deflection and stress functions are assumed to satisfy simply supported boundary conditions, and the Galerkin method is applied to obtain closed-form expressions of load-deflection relations. An analysis of separate and simultaneous influences of carbon nanotube volume fraction and distribution types, geometrical parameters, varying degree of tangential edge constraints, thermal environments, geometrical imperfection and temperature dependence of material properties on the buckling behavior and load-carrying capacity of FG-CNTRC cylindrical panels results in interesting remarks and novelty of the present study. [ABSTRACT FROM AUTHOR]
	Copyright of Acta Mechanica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database:	Engineering Source

Description
Abstract:	Initial geometrical imperfection and elasticity of tangential edge constraints are inherent in real structures in general and composite cylindrical panels in particular. This paper investigates the nonlinear response of functionally graded nanocomposite cylindrical panels reinforced by single-walled carbon nanotubes (SWCNTs), exposed to thermal environments and subjected to uniform external pressure. The material properties of functionally graded carbon nanotube-reinforced composites (FG-CNTRC) are assumed to be temperature dependent, graded in the thickness direction, and are estimated by the extended rule of mixture through a micromechanical model. The governing equations are based on classical shell theory taking von Kármán-Donnell nonlinearity, initial geometrical imperfection and tangential constraints of boundary edges into consideration. Approximate solutions of deflection and stress functions are assumed to satisfy simply supported boundary conditions, and the Galerkin method is applied to obtain closed-form expressions of load-deflection relations. An analysis of separate and simultaneous influences of carbon nanotube volume fraction and distribution types, geometrical parameters, varying degree of tangential edge constraints, thermal environments, geometrical imperfection and temperature dependence of material properties on the buckling behavior and load-carrying capacity of FG-CNTRC cylindrical panels results in interesting remarks and novelty of the present study. [ABSTRACT FROM AUTHOR]
ISSN:	00015970
DOI:	10.1007/s00707-017-2093-z