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Article
The Influence of Periodic Shear on Structural Relaxation and Pore Redistribution in Binary Glasses
Journal of Non-Crystalline Solids
  • Nikolai V. Priezjev, Wright State University - Main Campus
  • Maxim A Makeev
Document Type
Article
Publication Date
2-15-2019
Abstract

The evolution of porous structure, potential energy and local density in binary glasses under oscillatory shear deformation is investigated using molecular dynamics simulations. The porous glasses were initially prepared via a rapid thermal quench from the liquid state across the glass transition and allowed to phase separate and solidify at constant volume, thus producing an extended porous network in an amorphous solid. We find that under periodic shear, the potential energy decreases over consecutive cycles due to gradual rearrangement of the glassy material, and the minimum of the potential energy after thousands of shear cycles is lower at larger strain amplitudes. Moreover, with increasing cycle number, the pore size distributions become more skewed toward larger length scales where a distinct peak is developed and the peak intensity is enhanced at larger strain amplitudes. The numerical analysis of the local density distribution functions demonstrates that cyclic loading leads to formation of higher density solid domains and homogenization of the glass phase with reduced density.

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The link is to a pre-print edition of the article.

DOI
10.1016/j.jnoncrysol.2018.12.005
Citation Information
Nikolai V. Priezjev and Maxim A Makeev. "The Influence of Periodic Shear on Structural Relaxation and Pore Redistribution in Binary Glasses" Journal of Non-Crystalline Solids Vol. 506 (2019) p. 14 - 20 ISSN: 0022-3093
Available at: http://works.bepress.com/nikolai-priezjev/66/