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Advances in Nano Research Volume 8, Number 2, February 2020 , pages 103-114 DOI: https://doi.org/10.12989/anr.2020.8.2.103 |
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Effect of laminate configuration on the free vibration/buckling of FG Graphene/PMMA composites |
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Mehran Karimi Zeverdejani and Yaghoub Tadi Beni
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| Abstract | ||
| In this research, buckling and free vibration of rectangular polymeric laminate reinforced by graphene sheets are investigated. Various patterns are considered for augmentation of each laminate. Critical buckling load is evaluated for different parameters, including boundary conditions, reinforcement pattern, loading regime, and laminate geometric states. Furthermore, vibration analysis is investigated for square laminate. Elastic properties of the composite are calculated using a combination of both molecular dynamics (MD) and the rule of mixture (MR). Kinematics of the plate is approximated based on the first shear deformation theory (FSDT). The current analysis is performed based on the energy method. For the numerical investigation, Ritz method is applied, and for shape functions, Chebyshev polynomials are utilized. It is found that the number of layers is effective on the buckling load and natural frequency of laminates which made from non-uniform layers. | ||
| Key Words | ||
| buckling; free vibration; FG-laminates; molecular dynamics; boundary conditions; Ritz method | ||
| Address | ||
| (1) Mehran Karimi Zeverdejani: Department of Mechanical Engineering, Shahrekord University, Shahrekord, Iran; (2) Yaghoub Tadi Beni: Faculty of Engineering, Shahrekord University, Shahrekord, Iran; (3) Yaghoub Tadi Beni: Nanotechnology Research Center, Shahrekord University, Shahrekord, Iran. | ||