| 纳米切削多晶铜的分子动力学仿真研究 |
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| 引用本文： | 刘飞,梁迎春,白清顺,郭永博. 纳米切削多晶铜的分子动力学仿真研究[J]. 工具技术, 2010, 44(2): 31-34 |
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| 作者姓名： | 刘飞 梁迎春 白清顺 郭永博 |
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| 作者单位： | 哈尔滨工业大学精密工程研究所,150001,哈尔滨 |
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| 摘 要： | 采用Voronoi方法建立了多晶铜切削模型,基于分子动力学方法实现了多晶铜纳米切削加工的二维分子动力学仿真。分别选用EAM势函数和Morse势函数来计算工件原子间以及工件原子和刀具原子间的相互作用。对切削过程和切削力的变化进行了分析,发现晶界会阻止位错向晶粒内部传播,在已加工区域表面,前一晶粒中的原子会随刀具运动到下一晶粒中形成晶界,切削过程中切削力随时间波动剧烈,并在晶界处会出现瞬时的峰值。
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| 关 键 词： | 分子动力学 多晶铜 纳米切削 |
Molecular Dynamics Simulation of Nanometric Cutting of Polycrystalline Copper |
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| Liu Fei,Liang Yingchun,Bai Qingshun,Guo Yongbo Research Institute of Precision Engineering,Harbin Institution of Technology,Harbin ,China. Molecular Dynamics Simulation of Nanometric Cutting of Polycrystalline Copper[J]. Tool Engineering(The Magazine for Cutting & Measuring Engineering), 2010, 44(2): 31-34 |
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| Authors: | Liu Fei Liang Yingchun Bai Qingshun Guo Yongbo Research Institute of Precision Engineering Harbin Institution of Technology Harbin China |
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| Affiliation: | Liu Fei,Liang Yingchun,Bai Qingshun,Guo Yongbo Research Institute of Precision Engineering,Harbin Institution of Technology,Harbin 150001,China |
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| Abstract: | Molecular dynamics simulation of nanometric cutting of polycrystalline copper using voronoi method to establish a polycrystalline copper cutting model is performed to study the nanometric cutting processes for nonocrystalline Cu. The EAM potential and Morse potential are used,respectively,to compute the interaction between workpiece atoms and the interactions between workpiece atoms and tool atoms. The results show that the transmission of dislocations into the internal of grains is prevented by grain bound... |
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| Keywords: | molecular dynamics polycrystalline copper nanometric cutting |
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