| Summary: | 碩士 === 國立虎尾科技大學 === 機械與機電工程研究所 === 98 === Abstract
This study used molecular dynamics to simulate the indentation properties of C60 filled in carbon nanotube and the resonator frequencies of carbon nanotubes. The interaction forces of carbon atoms was described by Tersoff’s potential energy. The nonbonding force of C60, carbon nanotube and probe was described by Lennard-Jones potential energy. The results of nanoindentation showed that when the system temperature increased, the maximum load was decreased. The Young’s modulus, plastic energy and elastictic energy were decreased with the raising system temperature. In addition, the mechanic properties of single carbon nanotube (SWCNT) and double wall carbon nanotube (DWCNT) were compared with the mechanic properties of C60 filled in carbon nanotube. That the results showed the stiffness of double wall carbon nanotube was the best, and the stiffness of single wall carbon nanotube was the worst. In resonator frequencies of carbon nanotubes processes, that the results showed when the system temperature increased, the resonator frequencies were decreased, and when the ratio of length and diameter increased, the resonator frequencies were decreased, the smaller carbon nanotube have excellent resonator frequency. A summary was made a serious of discussion with the mechanical properties of C60 filled in carbon nanotubes and the resonator frequencies of carbon nanotubes.
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