Stress calculations for carbon nanotubes
| Autor: | Timur Halicioglu |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Materials science
Metals and Alloys Young's modulus Mechanical properties of carbon nanotubes Surfaces and Interfaces Carbon nanotube Poisson's ratio Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Stress (mechanics) symbols.namesake law Ultimate tensile strength Materials Chemistry symbols Cylinder stress Composite material Elastic modulus |
| Zdroj: | Thin Solid Films. 312:11-14 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/s0040-6090(97)00369-6 |
| Popis: | Atomic stresses were calculated for carbon nanotubes under strain conditions. Graphitic tubules with radii ranging from approximately 2 to 11 Angstroms and two different tubule structures with varying atomic orientations were included in the calculations. Elongations and contractions were applied in the axial direction and atomic stress values were calculated for infinitely long tubules. The calculations were carried out using Brenner's function which was developed for carbon species. Results indicate that the stress is tensile in the radial direction while it is compressive in the tangential direction. Variations in stress values in the direction of the cylindrical aids were investigated as a function of applied strain. Furthermore, using the stress-strain curve (calculated based on atomic considerations), the values of Young's modulus and Poisson's ratio for nanotubules were also estimated. |
| Databáze: | OpenAIRE |
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