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MD Simulation of Effect of Crystal Orientation and Cutting Direction on Nanometric Cutting Using AFM Pin Tool
Jun-jie Zhang*,Tao Sun,Yong-da Yan,Ying-chun Liang,Shen Dong
Author NameAffiliationE-mail
Jun-jie Zhang* School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China zhjj505@gmail.com 
Tao Sun School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China  
Yong-da Yan School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China  
Ying-chun Liang School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China  
Shen Dong School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China  
Abstract:
"Three-dimensional molecular dynamics simulations of nanometric cutting monocrystalline copper using atomic force microscopy pin tool are conducted to investigate the effect of crystal orientation and corresponding cutting direction on the deformation characteristics. EAM potential and Morse potential are utilized respectively to compute the interactions between workpiece atoms, interactions between workpiece atoms and tool atoms. The results reveal that the nanometric cutting processes are significantly affected by crystal orientation and cutting direction. Along the [110] cutting direction, better quality of chip pattern and smaller workpiece material deformation region can be obtained than along the [100] cutting direction. Cutting the workpiece material (110) crystal orientation, samaller chip volume and smaller subsurface deformed region can be obtained than cutting the workpiece material (100) crystal orientation. The variations of workpiece atoms potential energy in different cutting processes are investigated."
Key words:  Nanometric cutting, Atomic force microscopy, Molecular dynamics, Crystal orientation, Cutting direction
FundProject:国家自然科学基金(50575058) 国家自然科学基金(50605012)
AFM针尖纳米切削晶向和切削方向影响的分子动力学
张俊杰*,孙涛,闫永达,梁迎春,董申
摘要:
"建立了AFM针尖切削单晶铜的三维分子动力学模型,研究了工件材料不同晶向和刀具切削方向对切削过程中工件材料变形的影响.采用EAM势计算工件原子之间的作用,采用Morse势计算刀具原子之间的作用.模拟结果表明工件材料晶向和切削方向对纳米切削过程有显著影响.沿[110]方向切削比[100]方向切削产生的切屑结合更紧密,切削工件材料(110)晶向比切削工件材料(100)晶向产生的切屑体积更小,工件材料变形区域更小.研究了工件材料晶向和切削方向组合的不同纳米切削过程中系统势能变化情况."
关键词:  纳米切削,AFM,分子动力学,晶向,切削方向
DOI:10.1088/1674-0068/20/06/619-624
分类号: