A damping boundary condition for atomistic-continuum coupling

被引：0

作者：

张杰 ^{[1
]}

Kiet Tieu ^{[1
]}

Guillaume Michal ^{[1
]}

朱洪涛 ^{[1
]}

张亮 ^{[1
]}

苏利红 ^{[1
]}

邓关宇 ^{[1
,2
]}

王辉 ^{[1
]}

机构：

[1] School of Mechanical,Materials,and Mechatronic Engineering,University of Wollongong

[2] Department of Materials Science and Engineering,Kyoto University

来源：

ChinesePhysicsB | 2017年 / 26卷 / 06期

基金：

日本学术振兴会;

关键词：

multiscale modeling; spurious wave reflection; coarse–fine decomposition; nonlinear damping;

D O I：

暂无

中图分类号：

TB383.1 [];

学科分类号：

070205 ; 080501 ; 1406 ;

摘要：

The minimization of spurious wave reflection is a challenge in multiscale coupling due to the difference of spatial resolution between atomistic and continuum regions. In this study, a new damping condition is presented for eliminating spurious wave reflection at the interface between atomistic and continuum regions. This damping method starts by a coarse–fine decomposition of the atomic velocity based on the bridging scale method. The fine scale velocity of the atoms in the damping region is reduced by applying nonlinear damping coefficients. The effectiveness of this damping method is verified by one-and two-dimensional simulations.

引用

页码：508 / 515

页数：8

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