Work

Strain Localization and Percolation of Stable Structure in Amorphous Solids

Year: 2005

Type: article

Abstract: Spontaneous strain localization occurs during mechanical tests of a model amorphous solid simulated using molecular dynamics. The degree of localization depends upon the extent of structural relaxation prior to mechanical testing. In the most rapidly quenched samples higher strain rates lead to increased localization, while the more gradually quenched samples exhibit the opposite strain rate dependence. This transition coincides with the k-core percolation of atoms with quasi-crystal-like short range order. The authors infer the existence of a related microstructural length scale.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.95.095502

Authors: Yunfeng Shi, Michael L. Falk

Institution: University of Michigan

Language: English

Topic: Material Dynamics and Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Division of Materials Research

Award: CAREER: Theory and Simulation of the Structure and Mechanical Properties of Non-crystalline Solids