Details

Autor(en) / Beteiligte

• Lerner, Edan

Titel

Mechanical properties of simple computer glasses

Ist Teil von

• Journal of non-crystalline solids, 2019-10, Vol.522, p.119570, Article 119570

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Recent advances in computational glass physics enable the study of computer glasses featuring a very wide range of mechanical and kinetic stabilities. The current literature, however, lacks a comprehensive data set against which different computer glass models can be quantitatively compared on the same footing. Here we present a broad study of the mechanical properties of several popular computer glass forming models. We examine how various dimensionless numbers that characterize the glasses' elasticity and elasto-plasticity vary under different conditions — in each model and across models — with the aim of disentangling the model-parameter-, external-parameter- and preparation-protocol-dependencies of these observables. We expect our data set to be used as an interpretive tool in future computational studies of elasticity and elasto-plasticity of glassy solids. •We observe and explain why glasses with a r-β pairwise interaction feature a nonmonotonic Poisson's ratio with varying $\beta$.•The effect of attractive interactions is to increase the nonaffinity of the bulk modulus at low pressures, leading to a decrease of their Poisson's ratio.•We offered a dimensionless quantifier of internal stresses that varies by as much as 40% by annealing a computer glass.•We observed an intriguing nonmonotonicity in the rate of changeof sample-to-sample shear modulus fluctuations with parent temperature.