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Author Georgantzinos, S. K. ♦ Anifantis, N. K. ♦ Giannopoulos, G. I.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ 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
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.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-07-07
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 120
Issue Number 1


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