[1]陈丽换,张国栋,陈云飞.纳米尺度下对黏滑现象的分子动力学模拟[J].东南大学学报(自然科学版),2010,40(1):128-132.[doi:10.3969/j.issn.1001-0505.2010.01.024]
 Chen Lihuan,Zhang Guodong,Chen Yunfei.Molecular dynamics simulation of stick-slip at nanoscale[J].Journal of Southeast University (Natural Science Edition),2010,40(1):128-132.[doi:10.3969/j.issn.1001-0505.2010.01.024]
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纳米尺度下对黏滑现象的分子动力学模拟()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第1期
页码:
128-132
栏目:
机械工程
出版日期:
2010-01-20

文章信息/Info

Title:
Molecular dynamics simulation of stick-slip at nanoscale
作者:
陈丽换12 张国栋1 陈云飞1
1 东南大学机械工程学院,南京 211189; 2 金陵科技学院机电工程学院,南京 211169
Author(s):
Chen Lihuan12 Zhang Guodong1 Chen Yunfei1
1 School of Mechanical Engineering, Southeast University, Nanjing 211189, China
2 School of Electrical and Mechanical Engineering, College of Jinling Technology, Nanjing 211169, China
关键词:
分子动力学模拟 摩擦力 温度 滑移速度 法向载荷
Keywords:
molecular dynamics simulation friction temperature sliding velocity normal force
分类号:
TH117
DOI:
10.3969/j.issn.1001-0505.2010.01.024
摘要:
采用分子动力学模拟的方法研究了硅针尖在金刚石基底滑动的黏滑现象,讨论了纳米尺度下温度、滑动速度、载荷等因素对黏滑摩擦的影响.模拟结果表明,在纳米尺度下,原子排列规则的两固体间的滑动摩擦力呈现出周期性的锯齿型变化.摩擦力曲线的波动周期取决于滑动过程中基体沿滑动方向的晶格常数,同时受接触面原子排列结构变化的影响.在较低温度范围内,滑动摩擦力随温度的升高近似呈线性减小,对滑动摩擦力的波动周期和振幅影响不大.在一定速度范围内,滑动摩擦力主要受黏着作用的影响,滑动摩擦力的大小随速度的增大近似呈线性增大.在一定载荷范围内,滑动摩擦力随载荷的增大近似呈线性增大,振动周期变大.
Abstract:
Molecular dynamics(MD)simulation of nanoscale stick-slip phenomena was performed for a silicon tip in contact with the diamond substrate. The influence of sliding velocity, normal force and temperature on the stick-slip at the nanoscale was analyzed. It is found that the regular arrangement of the atoms on the sliding surface induces a periodic sawtooth-like behavior in the friction curve. The period of the “sawtooth” depends on the lattice constant of the substrate along the sliding direction, and it is affected by the positions of atomic rows. In lower temperature range the sliding friction approximately linearly decreases with the increase of temperature, while the period and amplitude are little affected by the temperature. For a certain extent of velocity the sliding friction approximately linearly increases with sliding velocity due to the adhesive action.In certain range of normal force the sliding friction approximately linearly increases with the increase of normal force, meanwhile the vibration period of the sliding friction becomes larger.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 陈丽换(1976—),女,博士生; 陈云飞(联系人),男,博士,教授,博士生导师,yunfeichen@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(50676019).
引文格式: 陈丽换,张国栋,陈云飞.纳米尺度下对黏滑现象的分子动力学模拟[J].东南大学学报:自然科学版,2010,40(1):128-132. [doi:10.3969/j.issn.1001-0505.2010.01.024]
更新日期/Last Update: 2010-01-20