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Strain Rate and Temperature Effects on Compressive Buckling of Carbon Nanotubes and Intramolecular Junctions



Intramolecular carbon nanotube junctions under compression tend to buckle or exhibit structural instability, which will cause structural or electronics failure. Thus it is important to study the mechanical behavior of intramolecular junctions under compression. In this study, molecular dynamical simulations are carried out to study the compressive response of intramolecular junctions, as well as that of carbon nanotubes for comparison. The simulation results indicate that, within low loading rate, the strain rate effect can be ignored. If the strain rate increases further, the critical strain also increases. Simulation results reveal that local deformation may be introduced at high environmental temperature. It is also found that with increasing tube length the deformation modes transfer from shell buckling to column buckling for both junctions and carbon nanotubes.


strain rate, temperature, intramolecular carbon nanotube junction, buckling, critical compressive strainText

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