Continuum modeling of shear startup in soft glassy materials
Yield stress fluids (YSFs) display a dual nature highlighted by the existence of a critical
stress σ y such that YSFs are solid for stresses σ imposed below σ y, whereas they flow like …
stress σ y such that YSFs are solid for stresses σ imposed below σ y, whereas they flow like …
The role of annealing in determining the yielding behavior of glasses under cyclic shear deformation
Yielding behavior in amorphous solids has been investigated in computer simulations using
uniform and cyclic shear deformation. Recent results characterize yielding as a …
uniform and cyclic shear deformation. Recent results characterize yielding as a …
Statistical thermodynamics of strain hardening in polycrystalline solids
JS Langer - Physical Review E, 2015 - APS
This paper starts with a systematic rederivation of the statistical thermodynamic equations of
motion for dislocation-mediated plasticity proposed in 2010 by Langer, Bouchbinder, and …
motion for dislocation-mediated plasticity proposed in 2010 by Langer, Bouchbinder, and …
Chaotic dynamics in shear-band-mediated plasticity of metallic glasses
The chaotic dynamics describes how a small change of initial conditions can result in a large
difference in a deterministic nonlinear system, ie, the “butterfly effect.” Through a …
difference in a deterministic nonlinear system, ie, the “butterfly effect.” Through a …
The yielding transition in amorphous solids under oscillatory shear deformation
Amorphous solids are ubiquitous among natural and man-made materials. Often used as
structural materials for their attractive mechanical properties, their utility depends critically on …
structural materials for their attractive mechanical properties, their utility depends critically on …
Mean-field scenario for the athermal creep dynamics of yield-stress fluids
We develop a theoretical description based on an existent mean-field model for the transient
dynamics prior to the steady flow of yielding materials. The mean-field model not only …
dynamics prior to the steady flow of yielding materials. The mean-field model not only …
Metastability at the yield-stress transition in soft glasses
We study the solid-to-liquid transition in a two-dimensional fully periodic soft-glassy model
with an imposed spatially heterogeneous stress. The model we consider consists of droplets …
with an imposed spatially heterogeneous stress. The model we consider consists of droplets …
Universal features of amorphous plasticity
Plastic yielding of amorphous solids occurs by power-law distributed deformation
avalanches whose universality is still debated. Experiments and molecular dynamics …
avalanches whose universality is still debated. Experiments and molecular dynamics …
Crossover from stochastic activation to cooperative motions of shear transformation zones in metallic glasses
W Jiao, BA Sun, P Wen, HY Bai, QP Kong… - Applied Physics …, 2013 - pubs.aip.org
We observe that the stress relaxation of metallic glasses below glass transition temperatures
presents a universal double power-law decay behavior, indicating that relaxation dynamics …
presents a universal double power-law decay behavior, indicating that relaxation dynamics …
Driving rate dependence of avalanche statistics and shapes at the yielding transition
We study stress time series caused by plastic avalanches in athermally sheared disordered
materials. Using particle-based simulations and a mesoscopic elastoplastic model, we …
materials. Using particle-based simulations and a mesoscopic elastoplastic model, we …