Back to Search
Start Over
Deformation behaviors of Au nanotubes under torsion by molecular dynamics simulations
- Source :
- AIP Advances, Vol 8, Iss 8, Pp 085204-085204-9 (2018)
- Publication Year :
- 2018
- Publisher :
- AIP Publishing LLC, 2018.
-
Abstract
- In this study, the mechanical deformation behaviors of Au nanotubes (Au-NTs) under torsional stress are investigated using molecular dynamics (MD) simulations. The inter-atomic interaction is modeled using the embedded-atom potential. In particular, the effects of loading rate, thickness and length of the nanotube, as well as the thermal effects were systematically explored. The results indicated that higher loading rate, longer length and thinner wall thickness all led to a larger value of critical torsional angle (θcr), which signifies the onset of plastic deformation. On the other hand, θcr decreases with increasing temperature in all simulated results. Moreover, the torsional buckling deformation behavior and geometrical instability are found to strongly depend on the length of Au-NTs, the applied strain rate and temperature with vastly different underlying mechanisms.
- Subjects :
- Nanotube
Materials science
General Physics and Astronomy
Torsion (mechanics)
02 engineering and technology
Strain rate
021001 nanoscience & nanotechnology
01 natural sciences
Instability
lcsh:QC1-999
Molecular dynamics
Buckling
0103 physical sciences
Thermal
Deformation (engineering)
Composite material
010306 general physics
0210 nano-technology
lcsh:Physics
Subjects
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 8
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- AIP Advances
- Accession number :
- edsair.doi.dedup.....d05f1672752bfcb3ed14ba47ffbfa79e