Physics – Condensed Matter – Materials Science
Scientific paper
1998-03-05
Phys. Rev. B, 60(1999)7062
Physics
Condensed Matter
Materials Science
19 pages, 7 figures, v4 minor revisions, for associated quicktime movies see <http://esag.harvard.edu/falk/research/>
Scientific paper
10.1103/PhysRevB.60.7062
Molecular-dynamics simulations of fracture in metallic glass-like systems are observed to undergo embrittlement due to a small change in interatomic potential. This change in fracture toughness, however, is not accompanied by a corresponding change in flow stress. Theories of brittle fracture proposed by Freund and Hutchinson indicate that strain rate sensitivity is the controling physical parameter in these cases. A recent theory of viscoplasticity in this class of solids by Falk and Langer further suggests that the change in strain rate sensitivity corresponds to a change in the susceptibility of local shear transformation zones to applied shear stresses. A simple model of these zones is develped in order to quantify the dependence of this sensitivity on the interparticle potential.
No associations
LandOfFree
A molecular-dynamics study of ductile and brittle fracture in model non-crystalline solids does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A molecular-dynamics study of ductile and brittle fracture in model non-crystalline solids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A molecular-dynamics study of ductile and brittle fracture in model non-crystalline solids will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-679573