Molecular dynamics simulation on dislocation emission process

被引：0

作者：

Wang, TC ^{[1
]}

Tang, QH ^{[1
]}

机构：

[1] Chinese Acad Sci, LNM, Inst Mech, Beijing 100080, Peoples R China

来源：

METALS AND MATERIALS-KOREA | 1998年 / 4卷 / 03期

关键词：

correlative reference model; molecular dynamics; dislocation emission; flexible displacement boundary scheme; dislocation velocity;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A correlative reference model for a computer simulation of molecular dynamics is proposed in this paper. Based on this model, a flexible displacement boundary scheme is naturally introduced and the dislocations emitted from a crack tip are presumed to continuously pass through the border of an inner discrete atomic region to pile up at an outer continuum region. The simulations for a Mo crystal show that the interaction between a crack and emitted dislocations results in the decrease in local stress intensity factor gradually.

引用

页码：566 / 572

页数：7

共 18 条

[1] GRAIN-BOUNDARIES AS HETEROGENEOUS SYSTEMS - ATOMIC AND CONTINUUM ELASTIC PROPERTIES [J].