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《Acta Mechanica Solida Sinica》 2004-02
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Wang Lifeng Hu Haiyan Guo Wanlin (Institute of Vibration Engineering Research,Nanjing University of Aeronautics and Astronautics,Nanjing,210016)  
The impact of a carbon nanotube with a rigid wall is studied by using molecular dynamics. The interatomic interactions are described by a Tersoff-Brenner potential, and the interaction force between the carbon nanotube and the rigid wall is approximated by the ‘6~12’ Lennard-Jones potential. It is found that the velocity of stress wave predicted by molecular dynamics falls into the same range as that by the theory of elasticity. Different from an elastic rod, the impact duration of a nanotube is not only proportional to the length of nanotube, but also depends on the initial impact velocity and the diameter of nanotube. Furthermore, the stress at the end of nanotube is not a constant. However, the mean value of stress is close to the result given by the theory of elasticity.
【CateGory Index】: TB383
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