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Steel and Composite Structures Volume 22, Number 2, October10 2016 , pages 277-299 DOI: https://doi.org/10.12989/scs.2016.22.2.277 |
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Dynamic analysis of functionally graded nanocomposite plates reinforced by wavy carbon nanotube |
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Rasool Moradi-Dastjerdi and Hamed Momeni-Khabisi
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| Abstract | ||
| In this paper, free vibration, forced vibration, resonance and stress wave propagation behavior in nanocomposite plates reinforced by wavy carbon nanotube (CNT) are studied by a mesh-free method based on first order shear deformation theory (FSDT). The plates are resting on Winkler-Pasternak elastic foundation and subjected to periodic or impact loading. The distributions of CNTs are considered functionally graded (FG) or uniform along the thickness and their mechanical properties are estimated by an extended rule of mixture. In the mesh-free analysis, moving least squares (MLS) shape functions are used for approximation of displacement field in the weak form of motion equation and the transformation method is used for imposition of essential boundary conditions. Effects of CNT distribution, volume fraction, aspect ratio and waviness, and also effects of elastic foundation coefficients, plate thickness and time depended loading are examined on the vibrational and stresses wave propagation responses of the nanocomposite plates reinforced by wavy CNT. | ||
| Key Words | ||
| stress wave; resonance; vibration; nanocomposite plates; wavy carbon nanotube; mesh-free | ||
| Address | ||
| (1) Rasool Moradi-Dastjerdi: Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran; (2) Hamed Momeni-Khabisi: Department of Mechanical Engineering, University of Jiroft, Jiroft, Iran. | ||