Single-edge crack growth in graphene sheets under tension

摘要: Abstract We use molecular dynamics simulations to study crack initiation and propagation in pre-cracked single layer arm chair graphene sheets deformed simple tension by prescribing axial velocities atoms at one edge keeping the other fixed. It is found that value of J-integral depends upon length, for each initial length it increases with an increase length. Shorter cracks are propagate faster than longer but shorter begin propagating higher values strain cracks. Results computed rates 2.6 × 106, 2.6 × 107 2.6 × 108 s−1 reveal essentially same first two different third rate even though response pristine sheet three rates.