A Dislocation-based Model for the Dynamics of Sliding Precursors

被引：2

作者：

Li, Yiran ^{[1
]}

Huang, Ganyun ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mech Engn, Dept Mech, Tianjin 300350, Peoples R China

来源：

ACTA MECHANICA SOLIDA SINICA | 2021年 / 34卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Sliding precursor; Crack-like defects; Moving dislocations; Dislocation emission; FAULT RUPTURE; SLIP-PULSE; CRACK-TIP; FRICTION; PLASTICITY; FRONTS; ONSET; DETACHMENT; TRANSITION; EMISSION;

D O I：

10.1007/s10338-021-00237-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The onset of dynamic friction plays an important role in the study of sliding interfaces. Previously, the sliding precursors in the form of crack-like defects have been detected in experiments and their strain fields have been measured to be comparable to those of moving cracks. In the present work, we considered the dynamics of sliding precursors by solving the elastic problem due to a moving dislocation in a half-plane and the transient emission of a dislocation at the edge. It has been found that both the strain field of a moving dislocation and the spatiotemporal evolution agree well with those of a sliding precursor detected in experiments. The results may cast new light to the dynamics of sliding onset.

引用

页码：624 / 631

页数：8

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