Journal
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
Volume 22, Issue 4, Pages 1199-1234Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1099636218782770
Keywords
Dynamic stability; annular sandwich plate; carbon nanotube reinforced composite facesheets; first-order shear deformation theory; modified strain gradient theory
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Funding
- Iranian Nanotechnology Development Committee
- University of Kashan [682561/4]
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In this article, dynamic stability of annular sandwich plate with carbon nanotubes reinforced composite facesheets and an isotropic homogeneous core are presented based on first-order shear deformation theory and modified strain gradient theory. The generalized rule of mixture is employed to predict mechanical properties of microcomposite sandwich plate. The equations of motion are derived from Hamilton's principle and solved by differential quadrature method. The fast rate of convergence of the method is shown and the results are compared against existing results in the literature. The results indicate that volume fraction of carbon nanotubes in facesheets and dimensionless length scale parameter has significant effects on the dynamic stability region and the parametric resonance. Dynamic stability region increases with considering of dimensionless length scale parameter, increasing of volume fraction of carbon nanotubes, and static load factor. Also, the influence of inner-to-outer radius ratios, radius-to-thickness ratios, and core-to-facesheets ratios are considered. The results can be employed for design of materials science, in junction high pressure micropipe connections, solid-state physics, micro-electro-mechanical systems, and nano electromechanical systems such as microactuators and microsensor.
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