摘要
采用ＥＡＭ势对纳米铜杆的拉伸力学性能进行零温分子动力学模拟，研究了表面效应对原子能量、截面应力分布的影响．模拟结果表明，表面原子弛豫降低了纳米杆初始阶段的拉伸弹性模量，表面效应明显影响截面应力的发展与分布．
A zero temperature simulation of tension properties of nano crystal copper wire has been studied by embedded atom method (EAM) and molecular dynamics. The surface effects on the distribution of atom energy and stress on cross section were investigated. It is found that the initial elastic modulus is decreased by surface relaxation, and the surface effect plays an important role in the evolution and distribution of stress.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第8期833-836,共4页
Acta Metallurgica Sinica
基金
国家教委博士点基金资助项目 97035818
关键词
拉伸性能
分子动力学
表面效应
纳米铜杆
copper nanowire
tension property
molecular dynamics
surface effect
