Nonlinear dynamic instability of edge-cracked functionally graded graphene-reinforced composite beams
Article
Article Title | Nonlinear dynamic instability of edge-cracked functionally graded graphene-reinforced composite beams |
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ERA Journal ID | 3707 |
Article Category | Article |
Authors | Song, Mitao, Zhou, Lei, Karunasena, Warna, Yang, Jie and Kitipornchai, Sritawat |
Journal Title | Nonlinear Dynamics |
Journal Citation | 109 (4), pp. 2423 - 2441 |
Number of Pages | 19 |
Year | 2022 |
Publisher | Springer |
Place of Publication | Netherlands |
ISSN | 0924-090X |
1573-269X | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s11071-022-07607-z |
Web Address (URL) | https://link.springer.com/article/10.1007/s11071-022-07607-z |
Abstract | This work investigates nonlinear dynamic instability of edge-cracked functionally graded (FG) graphene nanoplatelet (GNP)-reinforced composite (GNPRC) beams consist of perfectly bonded layers. GNPs with randomly orientations are uniformly dispersed in each individual layer, and GNP concentration varies along beam thickness. Micromechanics models are employed to estimate the effective material properties of the GNPRCs. Considering von Kármán-type nonlinear kinematics, nonlinear ordinary differential equations governing the motions are derived by using Lagrange equation together with Ritz method on the basis of a rotational spring model and the first-order shear deformation theory. The eigenvalue equation is derived using the Bolotin’s method and solved through an iteration procedure to determine the unstable region. Numerical analysis is conducted to study the effects of geometric nonlinearity and crack on the dynamic instability of FG-GNPRC beams in different situations. |
Keywords | Nonlinear dynamic instability, graphene reinforced composites, beams, functionally graded |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401702. Dynamics, vibration and vibration control |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Jiangsu University, China |
School of Engineering | |
Centre for Future Materials | |
Royal Melbourne Institute of Technology (RMIT) | |
University of Queensland |
https://research.usq.edu.au/item/xz2y4/nonlinear-dynamic-instability-of-edge-cracked-functionally-graded-graphene-reinforced-composite-beams
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