Applications of Molecular Dynamics Simulations in two Dimensional Frenkel-Kontorova Model

被引:0
作者
Ren, Zhen [1 ,3 ]
Wang, Zhilong [2 ]
Chen, Yueling [2 ]
Wang, Xiaofang [2 ]
Wei, Xingmin
Song, Xianxia [1 ,3 ]
机构
[1] Gansu Univ Tradit Chinese Med, Informat Engn Sch, Lanzhou, Peoples R China
[2] Gansu Univ Tradit Chinese Med, Sch Sci, Lanzhou, Peoples R China
[3] Gansu Univ Tradit Chinese Med, Informat Engn Sch, Lanzhou, Peoples R China
来源
PROCEEDINGS OF THE 2014 INTERNATIONAL CONFERENCE ON MECHATRONICS, ELECTRONIC, INDUSTRIAL AND CONTROL ENGINEERING | 2014年 / 5卷
关键词
component; molecular dynamics; Frenkel-Kontorova model; dc force; Runge-Kutta algorithm; superconducting devise; INTERFERENCE; LOCKING;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Based on the molecular dynamics simulation, this manuscript is dedicated to the studies of dynamical behavior in the two dimensional Frenkel-Kontorova model with triangular symmetric periodic substrate when a dc drive and a circular ac driven force are applied. The numerical results show that the velocity of system increases in quantized steps with step weights of < V >=n (0,1,2,3...). This ensures the reliability and accuracy of the scheme of our molecular dynamics code. As an important application, it is also obtained from our numerical results that the critical depinning force (known as the static frictional force in the tribology) can be strongly affected by the direction of the dc force. The obtained results show that the static frictional force is minimum value for alpha=0 degrees and 60 degrees. It are also noted that the curves are symmetric about alpha=30 degrees.
引用
收藏
页码:592 / +
页数:3
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