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Erschienen in: Acta Mechanica Sinica 5/2017

30.03.2017 | Research Paper

An analytical symplectic approach to the vibration analysis of orthotropic graphene sheets

verfasst von: Xinsheng Xu, Dalun Rong, C. W. Lim, Changyu Yang, Zhenhuan Zhou

Erschienen in: Acta Mechanica Sinica | Ausgabe 5/2017

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Abstract

A nonlocal continuum orthotropic plate model is proposed to study the vibration behavior of single-layer graphene sheets (SLGSs) using an analytical symplectic approach. A Hamiltonian system is established by introducing a total unknown vector consisting of the displacement amplitude, rotation angle, shear force, and bending moment. The high-order governing differential equation of the vibration of SLGSs is transformed into a set of ordinary differential equations in symplectic space. Exact solutions for free vibration are obtianed by the method of separation of variables without any trial shape functions and can be expanded in series of symplectic eigenfunctions. Analytical frequency equations are derived for all six possible boundary conditions. Vibration modes are expressed in terms of the symplectic eigenfunctions. In the numerical examples, comparison is presented to verify the accuracy of the proposed method. Comprehensive numerical examples for graphene sheets with Levy-type boundary conditions are given. A parametric study of the natural frequency is also included.

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Metadaten
Titel
An analytical symplectic approach to the vibration analysis of orthotropic graphene sheets
verfasst von
Xinsheng Xu
Dalun Rong
C. W. Lim
Changyu Yang
Zhenhuan Zhou
Publikationsdatum
30.03.2017
Verlag
The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences
Erschienen in
Acta Mechanica Sinica / Ausgabe 5/2017
Print ISSN: 0567-7718
Elektronische ISSN: 1614-3116
DOI
https://doi.org/10.1007/s10409-017-0656-9

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