Non-linear bending analysis of nanocomposites reinforced by graphene-nanotubes with finite shell element and membrane enhancement. (1st March 2018)

• Record Type: Journal Article
• Authors: Zghal, S.; Frikha, A.; Dammak, F.
• Is Part Of: Engineering structures. Volume 158(2018)
• Page Start: 95
• Page End: 109
• Publication Date: 2018-03-01
• Subjects: Non-linear -- Carbon nanotubes -- Functionally graded material -- Double directors shell model -- Bending behavior; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2017.12.017
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Non-linear bending analysis of nanocomposite shells reinforced by graphene-nanotubes. Double directors finite element shell model and membrane enhancement. Third-order shear deformation theory. Several numerical examples highlighted the efficiency of the proposed model. Abstract: The purpose of this paper is to investigate the non-linear bending behavior of functionally graded shell structures reinforced by carbon nanotubes (FG-CNTRC) using non-linear double directors shell model and membrane enhancement. This model induces a high order variation of the displacement field along the thickness direction and imposes a zero transverse shear stresses condition in the top and bottom surfaces. The effective material properties of FG-CNTRC are estimated by the modified rule of mixtures using some efficiency parameters. Uniformly (UD) and three graded distributions, known as FG-V, FG-O and FG-X, are considered to show the effects of carbon nanotubes (CNTs) profiles and their volume fractions on non-linear deflections of various shapes of shell structures. To illustrate these effects, a set of numerical examples including beams, plates, cylindrical panels and hemispherical shells are presented. The effects of some geometrical parameters are also examined. A convergence studies are carried out to validate the proposed non-linear model, then non-linear results for FG-CNTRC shell structures are provided leading hence to outline the applicability and the efficiency of the present model.