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Complex Oscillatory Yielding of Model Hard-Sphere Glasses

Koumakis, N. and Brady, J. F. and Petekidis, G. (2013) Complex Oscillatory Yielding of Model Hard-Sphere Glasses. Physical Review Letters, 110 (17). Art. No. 178301 . ISSN 0031-9007. doi:10.1103/PhysRevLett.110.178301. https://resolver.caltech.edu/CaltechAUTHORS:20130531-101843545

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Abstract

The yielding behavior of hard sphere glasses under large-amplitude oscillatory shear has been studied by probing the interplay of Brownian motion and shear-induced diffusion at varying oscillation frequencies. Stress, structure and dynamics are followed by experimental rheology and Brownian dynamics simulations. Brownian-motion-assisted cage escape dominates at low frequencies while escape through shear-induced collisions at high ones, both related with a yielding peak in G′′. At intermediate frequencies a novel, for hard sphere glasses, double peak in G′′ is revealed reflecting both mechanisms. At high frequencies and strain amplitudes a persistent structural anisotropy causes a stress drop within the cycle after strain reversal, while higher stress harmonics are minimized at certain strain amplitudes indicating an apparent harmonic response.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.110.178301DOIArticle
http://link.aps.org/doi/10.1103/PhysRevLett.110.178301PublisherArticle
https://arxiv.org/abs/1302.1362arXivUNSPECIFIED
ORCID:
AuthorORCID
Brady, J. F.0000-0001-5817-9128
Additional Information:© 2013 American Physical Society. Received 1 February 2013; published 23 April 2013. We thank A. B. Schofield for the particles and acknowledge funding from EU FP7-Infrastructures 'ESMI' (CP&CSA-2010-262348) and Greek "Thales" Project "COVISCO".
Funders:
Funding AgencyGrant Number
European Union (EU)CP&CSA-2010-262348
European Union (EU)COVISCO
Issue or Number:17
Classification Code:PACS: 83.80.Hj, 83.10.Mj
DOI:10.1103/PhysRevLett.110.178301
Record Number:CaltechAUTHORS:20130531-101843545
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130531-101843545
Official Citation:Koumakis, N., J. F. Brady, et al. (2013). "Complex Oscillatory Yielding of Model Hard-Sphere Glasses." Physical Review Letters 110(17): 178301.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:38724
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:03 Jun 2013 19:53
Last Modified:09 Nov 2021 23:39

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