TY - GEN
T1 - A continuum damage model for functionalized graphene membranes based on atomistic simulations
AU - Benedetti, I.
AU - Soler-Crespo, R. A.
AU - Pedivellano, A.
AU - Gao, Wei
AU - Espinosa, H. D.
N1 - Publisher Copyright:
© 2017 Trans Tech Publications, Switzerland.
PY - 2017
Y1 - 2017
N2 - A continuum model for GO membranes is developed in this study. The model is built representing the membrane as a two-dimensional, heterogeneous, two-phase continuum and the constitutive behavior of each phase (graphitic or oxidized) is built based on DFTB simulations of representative patches. A hyper-elastic continuum model is employed for the graphene areas, while a continuum damage model is more adequate for representing the behavior of oxidized regions. A finite element implementation for GO membranes subjected to degradation and failure is then implemented and, to avoid localization instabilities and spurious mesh sensitivity, a simple crack band model is adopted. The developed implementation is then used to investigate the existence of GO nano-representative volume elements.
AB - A continuum model for GO membranes is developed in this study. The model is built representing the membrane as a two-dimensional, heterogeneous, two-phase continuum and the constitutive behavior of each phase (graphitic or oxidized) is built based on DFTB simulations of representative patches. A hyper-elastic continuum model is employed for the graphene areas, while a continuum damage model is more adequate for representing the behavior of oxidized regions. A finite element implementation for GO membranes subjected to degradation and failure is then implemented and, to avoid localization instabilities and spurious mesh sensitivity, a simple crack band model is adopted. The developed implementation is then used to investigate the existence of GO nano-representative volume elements.
KW - Continuum damage mechanics
KW - DFTB
KW - Graphene oxide
KW - Nanocomposites
KW - Nanomechanics
UR - http://www.scopus.com/inward/record.url?scp=85029902277&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029902277&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.754.173
DO - 10.4028/www.scientific.net/KEM.754.173
M3 - Conference contribution
AN - SCOPUS:85029902277
SN - 9783035711684
T3 - Key Engineering Materials
SP - 173
EP - 176
BT - Advances in Fracture and Damage Mechanics XVI - 16th FDM
A2 - Mariano, Paolo Maria
A2 - Baragetti, Sergio
A2 - Casavola, Katia
A2 - Pappalettere, Carmine
A2 - Aliabadi, Ferri M.H.
PB - Trans Tech Publications Ltd
T2 - 16th International Conference on Fracture and Damage Mechanics, 2017
Y2 - 18 July 2017 through 20 July 2017
ER -