Reference : NURBS-based finite element analysis of functionally graded plates: Static bending, vi...
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Computational Sciences
NURBS-based finite element analysis of functionally graded plates: Static bending, vibration, buckling and flutter
Valizadeh, N. [Institute of Structural Mechanics, Bauhaus-Universität Weimar, Marienstraße, Weimar, Germany]
Natarajan, S. [School of Civil and Environmental Engineering, The University of New South Wales, Sydney, Australia]
Gonzalez-Estrada, O. A. [Institute of Mechanics and Advanced Materials, Cardiff University, Cardiff, United Kingdom]
Rabczuk, T. [Institute of Structural Mechanics, Bauhaus-Universität Weimar, Marienstraße, Weimar, Germany]
Bui, T. Q. [Chair of Structural Mechanics, Department of Civil Engineering, University of Siegen, Siegen, Germany]
Bordas, Stéphane mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Composite Structures
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[en] Finite elements ; Functionally graded ; Gradient index ; Isogeometric analysis ; Reissner Mindlin plate ; Shear locking ; Finite Element ; Gradient indexes ; Shear-locking ; Aspect ratio ; Buckling ; Finite element method ; Flutter (aerodynamics) ; Functionally graded materials ; Interpolation ; Mindlin plates ; Vibrations (mechanical)
[en] In this paper, a non-uniform rational B-spline based iso-geometric finite element method is used to study the static and dynamic characteristics of functionally graded material (FGM) plates. The material properties are assumed to be graded only in the thickness direction and the effective properties are computed either using the rule of mixtures or by Mori-Tanaka homogenization scheme. The plate kinematics is based on the first order shear deformation plate theory (FSDT). The shear correction factors are evaluated employing the energy equivalence principle and a simple modification to the shear correction factor is presented to alleviate shear locking. Static bending, mechanical and thermal buckling, linear free flexural vibration and supersonic flutter analysis of FGM plates are numerically studied. The accuracy of the present formulation is validated against available three-dimensional solutions. A detailed numerical study is carried out to examine the influence of the gradient index, the plate aspect ratio and the plate thickness on the global response of functionally graded material plates. © 2012 Elsevier Ltd.
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