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On the Bauschinger effect in supercooled melts under shear: results from mode coupling theory and molecular dynamics simulations

Frahsa, Fabian and Bhattacharjee, Amit Kumar and Horbach, Jürgen and Fuchs, Matthias and Voigtmann, Thomas (2013) On the Bauschinger effect in supercooled melts under shear: results from mode coupling theory and molecular dynamics simulations. Journal of Chemical Physics, 138, 12A513. American Institute of Physics (AIP). DOI: 10.1063/1.4770336 ISSN 0021-9606

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Abstract

We study the nonlinear rheology of a glass-forming binary mixture under the reversal of shear flow using molecular dynamics simulations and a schematic model of the mode-coupling theory of the glass transition (MCT). Memory effects lead to a history-dependent response, as exemplified by the vanishing of a stress-overshoot phenomenon in the stress–strain curves of the sheared liquid, and a change in the apparent elastic coefficients around states with zero stress. We investigate the various retarded contributions to the stress response at a given time schematically within MCT. The connection of this macroscopic response to single-particle motion is demonstrated using molecular- dynamics simulation.

Item URL in elib:https://elib.dlr.de/81208/
Document Type:Article
Title:On the Bauschinger effect in supercooled melts under shear: results from mode coupling theory and molecular dynamics simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Frahsa, FabianUniversität KonstanzUNSPECIFIED
Bhattacharjee, Amit KumarInstitut für Materialphysik im Weltraum, DLRUNSPECIFIED
Horbach, JürgenUniversität DüsseldorfUNSPECIFIED
Fuchs, MatthiasUniversität KonstanzUNSPECIFIED
Voigtmann, Thomasthomas.voigtmann (at) dlr.deUNSPECIFIED
Date:2013
Journal or Publication Title:Journal of Chemical Physics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:138
DOI :10.1063/1.4770336
Page Range:12A513
Publisher:American Institute of Physics (AIP)
ISSN:0021-9606
Status:Published
Keywords:Bauschinger effect, stress-strain relations, nonlinear rheology, molecular-dynamics simulations, mode-coupling theory
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Materialforschung unter Mikro-g (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Voigtmann, Dr.rer.nat. Thomas
Deposited On:15 Feb 2013 08:21
Last Modified:08 Mar 2018 18:42

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