期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 479, 期 -, 页码 42-48出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2017.10.009
关键词
Glasses; Deformation; Temperature; Strain amplitude; Molecular dynamics simulations
资金
- National Science Foundation [CNS-1531923]
- Russian Academic Excellence Project '5-100'
- Michigan State University
Molecular dynamics simulations are performed to examine the dynamic response of amorphous solids to oscillatory shear at finite temperatures. The data were collected from a poorly annealed binary glass, which was deformed periodically in the elastic regime during several hundred shear cycles. We found that the characteristic tithe required to reach a steady state with a minimum potential energy is longer at higher temperatures and larger strain amplitudes. With decreasing strain amplitude, the asymptotic value of the potential energy increases but it remains lower than in quiescent samples. The transient decay of the potential energy correlates well with a gradual decrease in the volume occupied by atoms with large nonaffine displacements. By contrast, the maximum amplitude of shear stress oscillations is attained relatively quickly when a large part of the system starts to deform reversibly.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据