Statistical structural mechanism for shear localization in amorphous materials
收藏中国科学院兰州化学物理研究所科学数据中心2025-12-19 更新2026-01-10 收录
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资源简介：
Shear localization is a prevalent phenomenon in amorphous materials undergoing plastic deformation, yet its underlying structural mechanism at the atomic scale remains elusive. Here we introduce a quantitative
approach to correlate structural order and disorder with the degree of shear localization in amorphous materials. This approach relies on two fundamental physical parameters: the statistical structural order, derived
from Shannon entropy of local Voronoi structures, and the localization susceptibility, characterized by spatial correlations in atomic-scale von Mises strain. Extensive atomistic simulations validate our approach and reveal
a universal relationship between structural order and shear localization across a wide range of amorphous solids, each with distinct chemical compositions and thermal histories. We interpret the correlation between
structural order and shear localization within a framework of shear banding as a mechanically-driven glass transition, governed by a structural collapse analogous to thermodynamic glass transitions on the potential
energy landscape.
提供机构：
中国科学院兰州化学物理研究所科学数据中心
创建时间：
2025-12-19
