SIMULATION ON TENSILE MECHANICAL PROPERTIES OF SINGLE CRYSTAL COPPER NANOSTRUCTURES WITH DIFFERENT HOLES CONFIGURATIONS

摘要：

In this paper,the tension process of the single crystal copper nanostructures with holes was simulated by the large-scale parallel molecular dynamics simulation technique.Based on centrosymmetry parameter method and combined with the dislocation nucleation theory,the effects of holes configuration and holes number on the tensile deformation mechanisms of nanostructures were investigated,and thus their influences on tensile mechanical properties of nanostructures were revealed.Obtained results show that hole defects configuration affect the anisotropy of nanostructures.With the same total volume of holes,holes configuration and holes number alter the atoms arrangement near holes which lead to different patterns of holes defect evolution,and thus affect the mechanical properties of nanostructures in terms of dislocations activity.

关键词： Molecular dynamics Nanostructures Dislocation nucleation Mechanical properties

作者: Y.C.Liang Z.Tong Q.S.Bai J.X.Chen Z.G Wang

作者单位: Centre for Precision Engineering,Harbin institute of technology,Hei Longjiang,Harbin,150001,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 132-135

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）