The behavior of shear-oscillated amorphous materials is studied using a coarse-grained model. Samples are prepared at different degrees of annealing and then subjected to athermal and quasi-static oscillatory deformations at various fixed amplitudes. The steady-state reached after several oscillations is fully determined by the initial preparation and the oscillation amplitude, as seen from stroboscopic stress and energy measurements. Under small oscillations, poorly annealed materials display shear-annealing, while ultra-stabilized materials are insensitive to them. Yet, beyond a critical oscillation amplitude, both kinds of materials display a discontinuous transition to the same mixed state composed of a fluid shear-band embedded in a marginal solid. Quantitative relations between uniform shear and the steady-state reached with this protocol are established. The transient regime characterizing the growth and the motion of the shear band is also studied.
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14 March 2022
Research Article|
March 11 2022
The fate of shear-oscillated amorphous solids
Special Collection:
Memory Formation
Chen Liu
;
Chen Liu
a)
1
Laboratoire de Physique de l’Ecole Normale Supérieure
, Paris, France
a)Authors to whom correspondence should be addressed: cl4175@columbia.edu and ferrero@cab.cnea.gov.ar
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Ezequiel E. Ferrero
;
Ezequiel E. Ferrero
a)
2
Instituto de Nanociencia y Nanotecnología, CNEA-CONICET, Centro Atómico Bariloche
, R8402AGP S. C. de Bariloche, Río Negro, Argentina
a)Authors to whom correspondence should be addressed: cl4175@columbia.edu and ferrero@cab.cnea.gov.ar
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Eduardo A. Jagla;
Eduardo A. Jagla
3
Centro Atómico Bariloche, Instituto Balseiro, CNEA, CONICET, UNCUYO
, R8402AGP S. C. de Bariloche, Río Negro, Argentina
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Kirsten Martens;
Kirsten Martens
4
University Grenoble Alpes, CNRS, LIPhy
, 38000 Grenoble, France
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Alberto Rosso;
Alberto Rosso
5
Université Paris-Saclay, LPTMS, CNRS
, 91405 Orsay, France
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Laurent Talon
Laurent Talon
6
Université Paris-Saclay, FAST, CNRS
, 91405 Orsay, France
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a)Authors to whom correspondence should be addressed: cl4175@columbia.edu and ferrero@cab.cnea.gov.ar
Note: This paper is part of the JCP Special Topic on Memory Formation.
J. Chem. Phys. 156, 104902 (2022)
Article history
Received:
November 21 2021
Accepted:
February 07 2022
Citation
Chen Liu, Ezequiel E. Ferrero, Eduardo A. Jagla, Kirsten Martens, Alberto Rosso, Laurent Talon; The fate of shear-oscillated amorphous solids. J. Chem. Phys. 14 March 2022; 156 (10): 104902. https://doi.org/10.1063/5.0079460
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