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- Title
MOLECULAR DYNAMICS ANALYSIS FOR FRACTURE BEHAVIOR OF GRAPHENE SHEETS WITH V-SHAPED NOTCHES UNDER TENSION.
- Authors
FANG, TE-HUA; CHANG, WIN-JIN; LIN, KAI-PENG; WENG, CHENG-I
- Abstract
Molecular dynamics (MD) simulations are performed to study the fracture behavior of armchair and zigzag graphene sheets with V-shaped notches subjected to tensile loading. The effects of temperature and notches depth on the fracture characteristics of the graphene sheets are examined. The results show that the cracks propagate from the notch tip along the direction perpendicular to the loading axis for armchair sheets. This is different from the zigzag graphene propagating along the direction of 45° from the loading axis. In addition, the fracture energy of zigzag graphene sheets is larger than armchair one at the same temperature condition. The fracture behavior of graphene sheet with V-shaped notches under tensile test at different temperatures was studied using molecular dynamics simulations. The fracture energy of the zigzag graphene sheets was larger than that of the armchair, at the same temperature condition. In addition, the fracture energy of zigzag graphene sheets decreased with an increase of the notches depth.
- Subjects
MOLECULAR dynamics; CRACK propagation (Fracture mechanics); GRAPHENE; TENSILE strength; TEMPERATURE effect
- Publication
NANO, 2014, Vol 9, Issue 8, p-1
- ISSN
1793-2920
- Publication type
Article
- DOI
10.1142/S1793292014500878