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Computers and Concrete Volume 19, Number 6, June 2017 , pages 677-687 DOI: https://doi.org/10.12989/cac.2017.19.6.677 |
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Nonlinear stability of non-axisymmetric functionally graded reinforced nano composite microplates |
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Abbas Loghman, Ali Ghorbanpour Arani, Ali Akbar Mosallaie Barzoki
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| Abstract | ||
| The nonlinear buckling response of nano composite anti-symmetric functionally graded polymeric microplate reinforced by single-walled carbon nanotubes (SWCNTs) rested on orthotropic elastomeric foundation with temperature dependent properties is investigated. For the carbon-nanotube reinforced composite (CNTRC) microplate, a uniform distribution (UD) and four types of functionally graded (FG) distribution are considered. Based on orthotropic Mindlin plate theory, von Kármán geometric nonlinearity and Hamilton\'s principle, the governing equations are derived. Generalized differential quadrature method (GDQM) is employed to calculate the non-linear buckling response of the plate. Effects of FG distribution type, elastomeric foundation, aspect ratio (thickness to width ratio), boundary condition, orientation of foundation orthotropy and temperature are considered. The results are validated. It is found that the critical buckling load without elastic medium is significantly lower than considering Winkler and Pasternak medium. | ||
| Key Words | ||
| nonlinear stability; reinforced microplates; non-axisymmetric functionally graded materials; Pasternak shear foundation | ||
| Address | ||
| Abbas Loghman, Ali Ghorbanpour Arani, Ali Akbar Mosallaie Barzoki: Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran | ||