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Published on: September 23, 2018
Buckling instability of circular double-layered graphene sheets
Toshiaki Natsuki1, Jin-Xing Shi, Qing-Qing Ni
1Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda-shi, 386-8567, Japan. natsuki@shinshu-u.ac.jp
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|February 29, 2012
Summary
This study investigates the buckling of circular double-layered graphene sheets (DLGSs). Van der Waals interactions significantly enhance buckling stress in the anti-phase mode compared to the in-phase mode.
Area of Science:
- Materials Science
- Mechanical Engineering
- Nanotechnology
Background:
- Graphene's unique properties make it suitable for advanced structural applications.
- Understanding the mechanical behavior of layered graphene structures is crucial for their practical use.
Purpose of the Study:
- To analyze the buckling properties of circular double-layered graphene sheets (DLGSs).
- To develop an analytical solution for predicting DLGS buckling behavior.
Main Methods:
- Modeling DLGSs as two interacting individual sheets using Lennard-Jones potential.
- Developing an analytical solution for coupled governing equations.
- Investigating the effects of boundary conditions, plate sizes, and buckling modes.
Main Results:
- Buckling stability is highly sensitive to buckling-mode shapes.
- Van der Waals interactions between layers significantly increase buckling stress.
- Anti-phase buckling modes exhibit substantially higher buckling stress than in-phase modes.
Conclusions:
- The developed analytical approach accurately predicts DLGS buckling properties.
- Buckling-mode shape is a critical factor influencing the stability of DLGSs.
- Layer interactions, particularly van der Waals forces, are vital for enhancing the mechanical strength of DLGSs.
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