Title |
Multiscale model to investigate the effect of graphene on the fracture characteristics of graphene/polymer nanocomposites
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Published in |
Discover Nano, October 2012
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DOI | 10.1186/1556-276x-7-595 |
Pubmed ID | |
Authors |
Avinash Parashar, Pierre Mertiny |
Abstract |
In this theoretical research work, the fracture characteristics of graphene-modified polymer nanocomposites were studied. A three-dimensional representative volume element-based multiscale model was developed in a finite element environment. Graphene sheets were modeled in an atomistic state, whereas the polymer matrix was modeled as a continuum. Van der Waals interactions between the matrix and graphene sheets were simulated employing truss elements. Fracture characteristics of graphene/polymer nanocomposites were investigated in conjunction with the virtual crack closure technique. The results demonstrate that fracture characteristics in terms of the strain energy release rate were affected for a crack lying in a polymer reinforced with graphene. A shielding effect from the crack driving forces is considered to be the reason for enhanced fracture resistance in graphene-modified polymer nanocomposites. |
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