Random critical point separates brittle and ductile yielding transitions in amorphous materials

M Ozawa, L Berthier, G Biroli… - Proceedings of the …, 2018 - National Acad Sciences
We combine an analytically solvable mean-field elasto-plastic model with molecular
dynamics simulations of a generic glass former to demonstrate that, depending on their …

[HTML][HTML] Low-energy quasilocalized excitations in structural glasses

E Lerner, E Bouchbinder - The Journal of chemical physics, 2021 - pubs.aip.org
Glassy solids exhibit a wide variety of generic thermomechanical properties, ranging from
universal anomalous specific heat at cryogenic temperatures to nonlinear plastic yielding …

Scaling description of dynamical heterogeneity and avalanches of relaxation in glass-forming liquids

A Tahaei, G Biroli, M Ozawa, M Popović, M Wyart - Physical Review X, 2023 - APS
We provide a theoretical description of dynamical heterogeneities in glass-forming liquids,
based on the premise that relaxation occurs via local rearrangements coupled by elasticity …

Pinching a glass reveals key properties of its soft spots

C Rainone, E Bouchbinder… - Proceedings of the …, 2020 - National Acad Sciences
It is now well established that glasses feature quasilocalized nonphononic excitations—
coined “soft spots”—, which follow a universal ω 4 density of states in the limit of low …

Elasticity, facilitation, and dynamic heterogeneity in glass-forming liquids

M Ozawa, G Biroli - Physical Review Letters, 2023 - APS
We study the role of elasticity-induced facilitation on the dynamics of glass-forming liquids by
a coarse-grained two-dimensional model in which local relaxation events, taking place by …

[PDF][PDF] Elasto-plastic behavior of amorphous materials: a brief review

A Tanguy - Comptes Rendus. Physique, 2021 - comptes-rendus.academie-sciences …
Disordered materials, like metallic glasses or silicate glasses, have an atomistic amorphous
structure preventing the formation of extended defects such as dislocations. Irreversible …

A direct link between active matter and sheared granular systems

PK Morse, S Roy, E Agoritsas… - Proceedings of the …, 2021 - National Acad Sciences
The similarity in mechanical properties of dense active matter and sheared amorphous
solids has been noted in recent years without a rigorous examination of the underlying …

Ductile and brittle yielding in thermal and athermal amorphous materials

HJ Barlow, JO Cochran, SM Fielding - Physical Review Letters, 2020 - APS
We study theoretically the yielding of sheared amorphous materials as a function of
increasing levels of initial sample annealing prior to shear, in three widely used constitutive …

The role of annealing in determining the yielding behavior of glasses under cyclic shear deformation

H Bhaumik, G Foffi, S Sastry - Proceedings of the National …, 2021 - National Acad Sciences
Yielding behavior in amorphous solids has been investigated in computer simulations using
uniform and cyclic shear deformation. Recent results characterize yielding as a …

Strain localization above the yielding point in cyclically deformed glasses

ADS Parmar, S Kumar, S Sastry - Physical Review X, 2019 - APS
We study the yielding behavior of a model glass under cyclic athermal quasistatic
deformation and at finite rate and temperature, computationally, and show that yielding is …