Macroscopic yielding in jammed solids is accompanied by a nonequilibrium first-order transition in particle trajectories
Year: 2016
Type: article
Abstract: We use computer simulations to analyze the yielding transition during large-amplitude oscillatory shear of a simple model for soft jammed solids. Simultaneous analysis of global mechanical response and particle-scale motion demonstrates that macroscopic yielding, revealed by a smooth crossover in mechanical properties, is accompanied by a sudden change in the particle dynamics, which evolves from nondiffusive motion to irreversible diffusion as the amplitude of the shear is increased. We provide numerical evidence that this sharp change corresponds to a nonequilibrium first-order dynamic phase transition, thus establishing the existence of a well-defined microscopic dynamic signature of the yielding transition in amorphous materials in oscillatory shear.
Source: Physical review. E
Authors: Takeshi Kawasaki, Ludovic Berthier
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: Passive and active dynamics in soft deformable particles, Studies of the glass transtion in nonequilibrium, non-uniform, and not-standard liquids, 変形の効果を取り入れた粒子の分散系における流動特性, Non-Gaussian fluctuation and rheology in jammed matter, G741809402, Statistical physics of dense particle systems in the absence of thermal fluctuations
OpenAlex ID: W861572990