国家自然科学基金资助项目(50135030)
以单壁纳米碳管为例,建立了其分子动力学模型,并对(5,5)和(10,10)扶手椅型纳米碳管与刚性壁的正碰撞过程和简谐纵波传播过程进行了模拟.在些基础上,探讨如何用弹性杆模型来研究纳米碳管的动力学问题.研究表明,弹性杆模型可以描述单壁扶手椅型纳米碳管与刚性壁高速碰撞的动力学行为;对于纵波传播中的色散描述,则需在弹性杆模型中计入纳米碳管微结构引起的非局部弹性效应.
This paper addresses a few dynamic problems of carbon nanotubes through the illustrative examples of (5,5)and(10,10) armchair single-walled carbon nanotubes.It presents the results of molecular dynamics simulation for the normal impact of the carbon nanotubes with a rigid wall,and the simulation results of the propagation of harmonic longitudinal waves in the carbon nonatubes.It also demonstrates the validity of dynamic model of an elastic rod for those dynamic problems.The elastic rod model enables one to study the high-speed impact of microstructures in those carbon nanotubes when the wave dispersion in under study.
胡海岩,王立峰.纳米碳管的若干动力学问题[J].动力学与控制学报,2003,1(1):14~19; Hu Haiyan, Wang Lifeng. Dynamic problems of carbon nanotubes[J]. Journal of Dynamics and Control,2003,1(1):14-19.
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