4.3 Article

Complexity of plastic instability in amorphous solids: Insights from spatiotemporal evolution of vibrational modes

期刊

EUROPEAN PHYSICAL JOURNAL E
卷 43, 期 9, 页码 -

出版社

SPRINGER
DOI: 10.1140/epje/i2020-11983-6

关键词

Topical issue; Disordered; Non-Equilibrium Systems; From Supercooled Liquids to Amorphous Solids

资金

  1. National Natural Science Foundation of China (NSFC) Basic Science Center for Multiscale Problems in Nonlinear Mechanics [11988102]
  2. NSFC [11972345, 11790292]
  3. Youth Innovation Promotion Association of Chinese Academy of Sciences [Y201704]

向作者/读者索取更多资源

It has been accepted that low-frequency vibrational modes are causally correlated to fundamental plastic rearrangement events in amorphous solids, irrespective of the structural details. But the mode-event relationship is far from clear. In this work, we carry out case studies using atomistic simulations of a three-dimensional Cu50Zr50 model glass under athermal, quasistatic shear. We focus on the first four plastic events, and carefully trace the spatiotemporal evolution of the associated low-frequency normal modes with applied shear strain. We reveal that these low-frequency modes get highly entangled with each other, from which the critical mode emerges spontaneously to predict a shear transformation event. But the detailed emergence picture is event by event and shear-protocol dependent, even for the first plastic event. This demonstrates that the instability of a plastic event is a result of extremely complex multiple-path choice or competition, and there is a strong, elastic interaction among neighboring instability events. At last, the generality of the present findings is shown to be applicable to covalent-bonded glasses.

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。

评论

主要评分

4.3
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据