Advances in nano research

  • 제16권3호
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  • Pages.289-301
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  • 2024
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  • 2287-237X(pISSN)
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  • 2287-2388(eISSN)
테크노프레스 (Techno-Press)
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Static bending response of axially randomly oriented functionally graded carbon nanotubes reinforced composite nanobeams

  • Ahmed Amine Daikh (Artificial Intelligence Laboratory for Mechanical and Civil Structures, and Soil, University Centre of Naama) ;
  • Ahmed Drai (Department of Mechanical Engineering, Mustapha STAMBOULI University of Mascara) ;
  • Mohamed Ouejdi Belarbi (Laboratoire de Genie Energetique et Materiaux, LGEM, Universite de Biskra) ;
  • Mohammed Sid Ahmed Houari (Laboratoire d'Etude des Structures et de Mecanique des Materiaux, Departement de Genie Civil, Faculte des Sciences et de la Technologie, Universite Mustapha Stambouli ) ;
  • Benoumer Aour (LABAB Laboratory of ENPO) ;
  • Mohamed A. Eltaher (Faculty of Engineering, Mechanical Engineering Department, King Abdulaziz University) ;
  • Norhan A. Mohamed (Engineering Mathematics Department, Faculty of Engineering, Zagazig University)
  • 투고 : 2021.05.22
  • 심사 : 2024.01.28
  • 발행 : 2024.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this work, an analytical model employing a new higher-order shear deformation beam theory is utilized to investigate the bending behavior of axially randomly oriented functionally graded carbon nanotubes reinforced composite nanobeams. A modified continuum nonlocal strain gradient theory is employed to incorporate both microstructural effects and geometric nano-scale length scales. The extended rule of mixture, along with molecular dynamics simulations, is used to assess the equivalent mechanical properties of functionally graded carbon nanotubes reinforced composite (FG-CNTRC) beams. Carbon nanotube reinforcements are randomly distributed axially along the length of the beam. The equilibrium equations, accompanied by nonclassical boundary conditions, are formulated, and Navier's procedure is used to solve the resulting differential equation, yielding the response of the nanobeam under various mechanical loadings, including uniform, linear, and sinusoidal loads. Numerical analysis is conducted to examine the influence of inhomogeneity parameters, geometric parameters, types of loading, as well as nonlocal and length scale parameters on the deflections and stresses of axially functionally graded carbon nanotubes reinforced composite (AFG CNTRC) nanobeams. The results indicate that, in contrast to the nonlocal parameter, the beam stiffness is increased by both the CNTs volume fraction and the length-scale parameter. The presented model is applicable for designing and analyzing microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS) constructed from carbon nanotubes reinforced composite nanobeams.

키워드

참고문헌

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