Steel and Composite Structures

  • 제44권4호
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  • Pages.451-471
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  • 2022
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Finite element bending and buckling analysis of functionally graded carbon nanotubes-reinforced composite beam under arbitrary boundary conditions

  • Belarbi, Mohamed-Ouejdi (Laboratoire de Recherche en Genie Civil, LRGC, Universite de Biskra) ;
  • Salami, Sattar Jedari (Department of Biomedical Engineering, Central Tehran branch, Islamic Azad University) ;
  • Garg, Aman (Department of Civil and Environmental Engineering, The NorthCap University) ;
  • Hirane, Hicham (Laboratoire de Recherche en Genie Civil, LRGC, Universite de Biskra) ;
  • Amine, Daikh Ahmed (Department of Technology, University Centre of Naama) ;
  • Houari, Mohammed Sid Ahmed (Laboratoire d'Etude des Structures et de Mécanique des Materiaux, Departement de Genie Civil, Faculté des Sciences et de la Technologie, Universite Mustapha Stambouli)
  • 투고 : 2020.10.28
  • 심사 : 2021.05.21
  • 발행 : 2022.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

In the present paper, the static bending and buckling responses of functionally graded carbon nanotubes-reinforced composite (FG-CNTRC) beam under various boundary conditions are investigated within the framework of higher shear deformation theory. The significant feature of the proposed theory is that it provides an accurate parabolic distribution of transverse shear stress through the thickness satisfying the traction-free boundary conditions needless of any shear correction factor. Uniform (UD) and four graded distributions of CNTs which are FG-O, FG-X, FG- and FG-V are selected here for the analysis. The effective material properties of FG-CNTRC beams are estimated according to the rule of mixture. To model the FG-CNTRC beam realistically, an efficient Hermite-Lagrangian finite element formulation is successfully developed. The accuracy and efficiency of the present model are demonstrated by comparison with published benchmark results. Moreover, comprehensive numerical results are presented and discussed in detail to investigate the effects of CNTs volume fraction, distribution patterns of CNTs, boundary conditions, and length-to-thickness ratio on the bending and buckling responses of FG-CNTRC beam. Several new referential results are also reported for the first time which will serve as a benchmark for future studies in a similar direction. It is concluded that the FG-X-CNTRC beam is the strongest beam that carries the lowest central deflection and is followed by the UD, V, Λ, and FG-O-CNTRC beam. Besides, the critical buckling load belonging to the FG-X-CNTRC beam is the highest, followed by UD and FG-O.

키워드

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