Carbon nanotube (CNT) is promising to revolutionise several fields in material science and is a major component of nanotechnology. In this study, molecular dynamics simulation is used to investigate the elastic properties of single–walled carbon nanotubes. Comprehensive numerical calculations are carried out for different armchair and zigzag carbon nanotubes with various geometric dimensions to assess the effects of tube radius, tube length and tube chirality on the elastic properties of single–walled carbon nanotubes (SWCNTs). The results show that, the axial Young's modulus of both armchair and zigzag SWCNTs decreases with increasing tube radius which is also in good agreement with experimental observation. The results also reveal that, the value of the axial Young's modulus of the SWCNTs is independent of the tube length and tube chirality.
Keywords: carbon nanotubes, single–walled CNT, molecular dynamics, simulation, elastic constant, Young', s modulus, COMPASS force–field, nanotechnology, tube radius, tube length, tube chirality