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author:

黄健萌 (黄健萌.) [1] (Scholars:黄健萌) | 陈晶晶 (陈晶晶.) [2]

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CQVIP PKU CSCD

Abstract:

在考虑黏附力和单晶铜弹塑性变形基础上,基于EAM和Morse势函数和Verlet算法动态模拟了金刚石压头与单晶铜纳米黏着接触与分离过程.研究表明:压关尚未接触基体时,压头与基体之间作用力主要表现为引力,基体最上层原子易与压头原子发生“突跳”黏着接触现象;继续下移时,接触力随压头位移增大而呈增加趋势,且基体被压正下方不断发生位错原子堆积现象;压头与基体分离中,接触力与压头位移曲线呈锯齿状减小趋势,并且分离过程位移对应于黏着下压接触位移发生明显的黏着滞后现象;分离后,部分原子被黏附于压头底表面,基体已发生明显的塑性变形.

Keyword:

分子动力学 接触力 黏着接触与分离

Community:

  • [ 1 ] [黄健萌]福州大学
  • [ 2 ] [陈晶晶]福州大学

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Source :

系统仿真学报

ISSN: 1004-731X

CN: 11-3092/V

Year: 2015

Issue: 2

Volume: 27

Page: 404-409

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: -1

Chinese Cited Count:

30 Days PV: 8

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