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Steel and Composite Structures
  Volume 45, Number 5, December10 2022 , pages 767-774
DOI: https://doi.org/10.12989/scs.2022.45.5.767
 


A geometrically nonlinear stability analysis of sandwich annular plates with cellular core
Ridha A. Ahmed, Kareem Mohsen Raheef, Nadhim M. Faleh and Raad M. Fenjan

 
Abstract
    A geometrically nonlinear stability analysis of sandwich annular plates with cellular core and particle-reinforced composite layers has been performed in the present research. The particles are powders of graphene oxide (GOP) which act as nanoscale filler of epoxy matrix. To this regard, Halpin-Tsai micromechanical scheme has been used to define the material properties of the layers. A square shaped core has been considered for which the material properties have been defined based on the relative density concept. Large deflection theory of thin shells has been selected to develop the complete formulation of sandwich plate. The geometrically nonlinear stability analysis of sandwich annular plates has been carried out by indicating that the buckling load is dependent on particle amount, thickness of layer and core relative density.
 
Key Words
    composite; design; nonlinear stability; numerical; sandwich plate; steel
 
Address
Ridha A. Ahmed, Nadhim M. Faleh and Raad M. Fenjan:
Al-Mustansiriah University, Engineering Collage P.O. Box 46049, Bab-Muadum, Baghdad 10001, Iraq

Kareem Mohsen Raheef:Ashur University College, Baghdad, Iraq
 

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