Published 6 issues per year
ISSN Print: 1543-1649
ISSN Online: 1940-4352
IF:
1.4
5-Year IF:
1.3
Immediacy Index:
2.2
Eigenfactor:
0.00034
JCI:
0.46
SJR:
0.333
SNIP:
0.606
CiteScore™::
3.1
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31
Indexed in
Dynamic Crack Propagation Using a Combined Molecular Dynamics/Extended Finite Element Approach
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ABSTRACT
A method is presented for simulating dynamic crack propagation using a coupled molecular dynamics/extended finite element method. Molecular dynamics is used at the crack tip while the extended finite element method naturally models the crack in the wake of the tip as a traction-free discontinuity. After recalling the basic molecular dynamics equations, the discretization of the continuum and the traction-free discontinuity via the extended finite element method, and the zonal coupling method between both domains, two-dimensional computations of dynamic fracture are presented, including a discussion on how to move and/or expand the zone in which molecular dynamics is used upon crack propagation.
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