Atomistic modeling of out-of-plane deformation of a propagating Griffith crack in graphene

Atomistic modeling of out-of-plane deformation of a propagating Griffith crack in graphene Linear elastic fracture mechanics concepts have been widely used to characterize the fracture of nanoscale materials. In these concepts, pre-existing cracks in two-dimensional problems are assumed to be planar during the crack propagation. However, a perfect planar configuration of atomically thin nanostructures is not achievable in many applications due to complex interatomic interactions at the atomic scale. Formation of ripples and wrinkles has been experimentally observed in freestanding two-dimensional materials such as graphene. In this study, we employ molecular dynamics simulations to investigate the influence of out-of-plane deformation of a propagating Griffith crack. A numerical nanoscale uniaxial tensile test of a graphene sheet with a central crack is conducted. Two main aspects of the study are considered. The first is devoted to examining the influence of the crack orientation and the out-of-plane deformation of the crack surfaces on the crack-tip stress field. The second is concerned with the influence of the out-of-plane deformation on the fracture resistance of graphene. The analysis of the crack-tip stress field reveals a remarkably high transverse compressive stress at the crack surfaces, which induces the out-of-plane deformation. Moreover, our results reveal that in the absence of the crack out-of-plane deformation, the fracture resistance of graphene approaches the value given by Griffith’s criterion at a relatively smaller crack length as compared to the case involving out-of-plane deformation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Mechanica Springer Journals

Atomistic modeling of out-of-plane deformation of a propagating Griffith crack in graphene

Loading next page...
 
/lp/springer_journal/atomistic-modeling-of-out-of-plane-deformation-of-a-propagating-j2TE26Ci9p
Publisher
Springer Vienna
Copyright
Copyright © 2017 by Springer-Verlag Wien
Subject
Engineering; Theoretical and Applied Mechanics; Classical and Continuum Physics; Continuum Mechanics and Mechanics of Materials; Structural Mechanics; Vibration, Dynamical Systems, Control; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0001-5970
eISSN
1619-6937
D.O.I.
10.1007/s00707-017-1883-7
Publisher site
See Article on Publisher Site

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial