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| 复合准周期势下的纳米摩擦分子动力学模拟 | |
| 引用本文： | 罗艳伟,富笑男,杨大鹏,符建华,贾瑜.复合准周期势下的纳米摩擦分子动力学模拟[J].润滑与密封,2009,34(3). |
| 作者姓名： | 罗艳伟 富笑男 杨大鹏 符建华 贾瑜 |
| 作者单位： | 1. 河南工业大学理学院,河南郑州,450052 2. 华北水电水利学院,河南郑州,450001 3. 郑州大学物理工程学院,河南郑州,450001 |
| 摘 要： | 采用Frenkel-Kontorova模型和涨落-耗散机制相结合的方法模拟一维原子链在复合准周期势能下纳米摩擦过程,考察了在复合准周期势能下各种因素对摩擦的调制作用.结果表明在复合势能形式中对摩擦起到主要调制作用的为构成复合势能中周期较小的余弦势能,此势能的周期和振幅的大小决定了调制作用的强弱. |
| 关 键 词： | 分子动力学模拟 复合准周期势能 摩擦因数 振幅比 周期比 |
Molecular Dynamics Simulation of Nanoscale Sliding Friction with Compound Quasi-period Potential |
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| Luo Yanwei,Fu Xiaonan,Yang Dapeng,Fu Jianhua,Jia Yu.Molecular Dynamics Simulation of Nanoscale Sliding Friction with Compound Quasi-period Potential[J].Lubrication Engineering,2009,34(3). | |
| Authors: | Luo Yanwei Fu Xiaonan Yang Dapeng Fu Jianhua Jia Yu |
| Affiliation: | 1.College of Science;Henan University of Technology;Zhengzhou Henan 450052;China;2.School of Physics and Engineering;Zhengzhou University;Zhengzhou Henan 450001;3.North China Institute of Water Conservancy and Hydroelectric Power;China |
| Abstract: | A method based on fluctuation-dissipation mechanism and Frenkel-Kontorova model was used to calculate the friction coefficient for a one-dimensional atom chain sliding on a compound quasi-period potential.The modulation of various factors in this situation was investigated.The calculation result was that the friction coefficient is modulated by the potential that has smaller period in a compound quasi-period potential,and this modulation effect is decided by the period and amplitude of the potential. |
| Keywords: | molecular dynamics simulation compound quasi-period potential friction coefficient amplitude proportion period proportion |
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