| About this Abstract |
| Meeting |
2011 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses VIII
|
| Presentation Title |
Correlations between Local Stresses and Moduli in Model Metallic Glasses |
| Author(s) |
Karimi Kamran, Craig Maloney |
| On-Site Speaker (Planned) |
Craig Maloney |
| Abstract Scope |
Molecular dynamics (MD) simulations of sheared model metallic glasses have long shown evidence for localized flow \emph{events}. However, meaningful ways for defining flow \emph{defects} where the system has a propensity to yield have been elusive. We present results of MD simulations of slowly sheared Lennard-Jones glasses. We show that the deviatoric component of the coarse grained stress tensor shows a non-trivial power-law decay with coarse-graining size refelecting a scale-invariant local anisotropy. We furthermore discuss how these scalings of the stress field are related to similar scalings in the elastic moduli. The results call into question the naive use of the stress field to identify defective regions in a glass. |
| Proceedings Inclusion? |
Undecided |