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Title: Coupled thermomechanical behavior of graphene using the spring-based finite element approach

Abstract

The prediction of the thermomechanical behavior of graphene using a new coupled thermomechanical spring-based finite element approach is the aim of this work. Graphene sheets are modeled in nanoscale according to their atomistic structure. Based on molecular theory, the potential energy is defined as a function of temperature, describing the interatomic interactions in different temperature environments. The force field is approached by suitable straight spring finite elements. Springs simulate the interatomic interactions and interconnect nodes located at the atomic positions. Their stiffness matrix is expressed as a function of temperature. By using appropriate boundary conditions, various different graphene configurations are analyzed and their thermo-mechanical response is approached using conventional finite element procedures. A complete parametric study with respect to the geometric characteristics of graphene is performed, and the temperature dependency of the elastic material properties is finally predicted. Comparisons with available published works found in the literature demonstrate the accuracy of the proposed method.

Authors:
;  [1];  [2]
  1. Machine Design Laboratory, Department of Mechanical Engineering and Aeronautics, University of Patras, Rio, 26500 Patras (Greece)
  2. Materials Science Laboratory, Department of Mechanical Engineering, Technological Educational Institute of Western Greece, 1 Megalou Alexandrou Street, 26334 Patras (Greece)
Publication Date:
OSTI Identifier:
22597850
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 1; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCURACY; BOUNDARY CONDITIONS; COMPARATIVE EVALUATIONS; ELASTICITY; FINITE ELEMENT METHOD; FLEXIBILITY; GEOMETRY; GRAPHENE; NANOSTRUCTURES; PARAMETRIC ANALYSIS; POTENTIAL ENERGY; SPRINGS; TEMPERATURE DEPENDENCE

Citation Formats

Georgantzinos, S. K., E-mail: sgeor@mech.upatras.gr, Anifantis, N. K., E-mail: nanif@mech.upatras.gr, and Giannopoulos, G. I., E-mail: ggiannopoulos@teiwest.gr. Coupled thermomechanical behavior of graphene using the spring-based finite element approach. United States: N. p., 2016. Web. doi:10.1063/1.4957289.
Georgantzinos, S. K., E-mail: sgeor@mech.upatras.gr, Anifantis, N. K., E-mail: nanif@mech.upatras.gr, & Giannopoulos, G. I., E-mail: ggiannopoulos@teiwest.gr. Coupled thermomechanical behavior of graphene using the spring-based finite element approach. United States. doi:10.1063/1.4957289.
Georgantzinos, S. K., E-mail: sgeor@mech.upatras.gr, Anifantis, N. K., E-mail: nanif@mech.upatras.gr, and Giannopoulos, G. I., E-mail: ggiannopoulos@teiwest.gr. 2016. "Coupled thermomechanical behavior of graphene using the spring-based finite element approach". United States. doi:10.1063/1.4957289.
@article{osti_22597850,
title = {Coupled thermomechanical behavior of graphene using the spring-based finite element approach},
author = {Georgantzinos, S. K., E-mail: sgeor@mech.upatras.gr and Anifantis, N. K., E-mail: nanif@mech.upatras.gr and Giannopoulos, G. I., E-mail: ggiannopoulos@teiwest.gr},
abstractNote = {The prediction of the thermomechanical behavior of graphene using a new coupled thermomechanical spring-based finite element approach is the aim of this work. Graphene sheets are modeled in nanoscale according to their atomistic structure. Based on molecular theory, the potential energy is defined as a function of temperature, describing the interatomic interactions in different temperature environments. The force field is approached by suitable straight spring finite elements. Springs simulate the interatomic interactions and interconnect nodes located at the atomic positions. Their stiffness matrix is expressed as a function of temperature. By using appropriate boundary conditions, various different graphene configurations are analyzed and their thermo-mechanical response is approached using conventional finite element procedures. A complete parametric study with respect to the geometric characteristics of graphene is performed, and the temperature dependency of the elastic material properties is finally predicted. Comparisons with available published works found in the literature demonstrate the accuracy of the proposed method.},
doi = {10.1063/1.4957289},
journal = {Journal of Applied Physics},
number = 1,
volume = 120,
place = {United States},
year = 2016,
month = 7
}
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