Abstract
This paper presents a multi-scale, multi-physics finite element model (FEM) simulating the electrical performance of single layer graphene/insulator under DC loading, which would be easily applied to most cases, extended to a more sophisticated material architecture in respect of being scientifically structured and proven. The approach consists of the creation of a unit cell and a representative volume element (RVE) micro-scale nanocomposite model on a commercially available FE package. The implementation of these models has been considered satisfactory and successful, as the variation of nanocomposite's electrical conductivity in respect to the volume content was in accordance with experimental data. Moreover, the numerical simulation was in accordance with the classical percolation law predictions, while the obtained percolation thresholds in terms of aspect ratio obey the Excluded Volume Theory. The graphene shape was considered in the analysis as a geometric parameter, being proved that the shape does not exhibit any profound effect on the electrical performance of the graphene/insulator nanocomposite. Finally, this model is capable to predict the full percolation response of the nanocomposite and can be applied to any nanocomposite architecture in contrast to general theories that can only estimate the percolation threshold rather than the full response.
Original language | English |
---|---|
Title of host publication | ECCOMAS Congress 2016 - Proceedings of the 7th European Congress on Computational Methods in Applied Sciences and Engineering |
Editors | G. Stefanou, V. Papadopoulos, V. Plevris, M. Papadrakakis |
Publisher | National Technical University of Athens |
Pages | 1984-2002 |
Number of pages | 19 |
ISBN (Electronic) | 9786188284401 |
DOIs | |
Publication status | Published - 2016 |
Externally published | Yes |
Event | European Congress on Computational Methods in Applied Sciences and Engineering 2016 - Crete, Greece Duration: 5 Jun 2016 → 10 Jun 2016 Conference number: 7th https://www.eccomas2016.org/ |
Conference
Conference | European Congress on Computational Methods in Applied Sciences and Engineering 2016 |
---|---|
Abbreviated title | ECCOMAS Congress 2016 |
Country/Territory | Greece |
City | Crete |
Period | 5/06/16 → 10/06/16 |
Internet address |
Keywords
- Computational methods
- Electrical conductivity
- Finite element analysis
- Graphene
- Nanocomposites