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Volume 33 Issue 5
Sep 2019
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Chinese Journal of High Pressure Physics  > 2019  >  33(5): 054102.
ZHANG Hui, SONG Mitao. Free Vibrations of Pre/Post-Buckled Graphene-Reinforced Epoxy Resin Matrix Nanocomposite Beams[J]. Chinese Journal of High Pressure Physics, 2019, 33(5): 054102. doi: 10.11858/gywlxb.20190701
Citation: ZHANG Hui, SONG Mitao. Free Vibrations of Pre/Post-Buckled Graphene-Reinforced Epoxy Resin Matrix Nanocomposite Beams[J]. Chinese Journal of High Pressure Physics, 2019, 33(5): 054102. doi: 10.11858/gywlxb.20190701
shu

Free Vibrations of Pre/Post-Buckled Graphene-Reinforced Epoxy Resin Matrix Nanocomposite Beams

doi: 10.11858/gywlxb.20190701

  • Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China

  • Received Date: 03 Jan 2019
  • Rev Recd Date: 23 Jan 2019
  • Publish Date: 25 Jul 2019
    Abstract
  • Free vibration of pre/post-buckled graphene-reinforced nanocomposite beams was analyzed by the differential quadrature method. Considering the random distribution and directional arrangement of graphene nanoplatelets in the matrix, Young’s moduli of graphene nanocomposites in two modes were estimated by Halpin-Tsai micromechanical model. The first-order shear deformation theory was used to establish the governing equations of beams by Hamilton principle. The critical buckling loads of the graphene-reinforced nanocomposite beam and the natural frequencies in the pre/post-buckling regimes were calculated by the differential quadrature method. Numerical results show that dispersing more graphene platelets with less single layers and arranging them in a reasonable mode will greatly increase the critical buckling loads of the beams and the natural frequencies in pre-buckling regime. However, the same approach reduces the stiffnesses of the beams in the post-buckling regime.

     

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