THE NUMERICAL SIMULATIONSTUDY SPANNING THE CONTINUUM/ATOMS SCALEON THE TYPE Ⅰ EDGE CRACK PROPAGATION PROCESS IN SINGLE CRYSTAL SILVERBASED ON THEDISPLACEMENT CONNECTION

SONG Kun; WANG LuSheng; LIU Bo; DING Jun; HUANG Xia; HE XiaoJin

doi:10.16579/j.issn.1001.9669.2018.02.011

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THE NUMERICAL SIMULATIONSTUDY SPANNING THE CONTINUUM/ATOMS SCALEON THE TYPE Ⅰ EDGE CRACK PROPAGATION PROCESS IN SINGLE CRYSTAL SILVERBASED ON THEDISPLACEMENT CONNECTION

更新时间：2022-09-22

- THE NUMERICAL SIMULATIONSTUDY SPANNING THE CONTINUUM/ATOMS SCALEON THE TYPE Ⅰ EDGE CRACK PROPAGATION PROCESS IN SINGLE CRYSTAL SILVERBASED ON THEDISPLACEMENT CONNECTION
- Journal of Mechanical Strength Vol. 40, Issue 2, Pages: 319-324(2018)
- 作者机构：
  
  1. 重庆理工大学机械工程学院
  2. 长安汽车股份有限公司汽车工程研究总院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.02.011
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SONG Kun, WANG LuSheng, LIU Bo, et al. THE NUMERICAL SIMULATIONSTUDY SPANNING THE CONTINUUM/ATOMS SCALEON THE TYPE Ⅰ EDGE CRACK PROPAGATION PROCESS IN SINGLE CRYSTAL SILVERBASED ON THEDISPLACEMENT CONNECTION. [J]. 40(2):319-324(2018)
DOI：

SONG Kun, WANG LuSheng, LIU Bo, et al. THE NUMERICAL SIMULATIONSTUDY SPANNING THE CONTINUUM/ATOMS SCALEON THE TYPE Ⅰ EDGE CRACK PROPAGATION PROCESS IN SINGLE CRYSTAL SILVERBASED ON THEDISPLACEMENT CONNECTION. [J]. 40(2):319-324(2018) DOI： 10.16579/j.issn.1001.9669.2018.02.011.

摘要

材料变形破坏机理的研究,以及NEMS/MEMS技术与生物技术的进步推动了多尺度分析方法的发展。然而,多尺度连接是多尺度建模的关键。本文采用有限元与分子动力学相结合的方法,采用应力强度因子和位移等力学参量连接和转换连续介质区域和离散分子动力学区域的力学信息,建立了二维单晶银板裂纹扩展的跨三区多尺度模型,得到了裂纹尖端坐标轨迹和微观尺度下的裂纹扩展过程,结果与理论和实验相符,证明了该方法的合理性。

Abstract

The study on deformation and failure mechanism of materials,and the progressof NEMS/MEMStechnology and biotechnologypromote the development of multi-scale analysis method. However,Multi-scale connectionisthe key of multi-scale model. The finite element method（ FEM） and molecular dynamics simulation（ MD） were combined to simulate the multi-scale models,and the stress intensity factors（ SIF） and displacement mechanics parameters were adopted to connect and convertthecontinuum region and discrete molecular dynamics region,then three multi-scale model of two-dimensional silver crack propagationwasestablished to obtain the crack tip trajectory and the micro-scale crackpropagationprocess. The result is in good agreement with theory and experiment,and proves the rationality of the method.

关键词

银板裂纹扩展位移耦合多尺度数值模拟

Keywords

SilverplateCrack propagationDisplacement couplingMulti-scale numerical simulation

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