Thermal Buckling Analysis of SMA Fiber-Reinforced Composite Plates Using Layerwise Model
Publication: Journal of Aerospace Engineering
Volume 22, Issue 4
Abstract
Thermal buckling analysis of laminated smart composite plates subjected to uniform temperature distribution has been presented. Shape memory alloy (SMA) fibers whose material properties depend on temperature have been used as a smart material. A three-dimensional layerwise plate model has been employed in developing the system equations using variational approach. Finite-element method has been adopted for discretization of the laminate. Lagrangian interpolation functions have been used to approximate the displacement components along the thickness as well as in the in-plane direction. The actual variation of prebuckling stresses has been accounted for in the derivation of the geometric stiffness matrix of the laminates. An incremental load technique has been used in the analysis to take into account the nonlinearity in the material properties of the SMA arising due to their temperature dependence. The effects of thickness ratio, orthotropic ratio, fiber orientation, aspect ratio, stacking sequence and various boundary conditions on the critical buckling temperature have been examined in details. The results have been validated with those available in the literature.
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© 2009 ASCE.
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Received: May 16, 2007
Accepted: Jun 11, 2008
Published online: Sep 15, 2009
Published in print: Oct 2009
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