Modeling of the Mechanical Properties of Chiral Metallic Nanotubes
| Autor: | Valentin A. Gorodtsov, Dmitry S. Lisovenko, I. A. Bryukhanov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Solid-state physics Tension (physics) High Energy Physics::Lattice Torsion (mechanics) chemistry.chemical_element Modulus 02 engineering and technology Surfaces and Interfaces Condensed Matter Physics 01 natural sciences Copper Condensed Matter::Materials Science 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Mechanics of Materials 0103 physical sciences Poynting vector General Materials Science Composite material Deformation (engineering) Cobalt |
| Zdroj: | Physical Mesomechanics. 23:477-486 |
| ISSN: | 1990-5424 1029-9599 |
| Popis: | The work studies the mechanical properties of chiral metallic nanotubes by the molecular statics method. The atomic structure of nanotubes was obtained by rolling up thin nanoplates from cubic crystals of copper, iron, aluminum, and cobalt with the (010) orientation at various chiral angles. It is shown that such nanotubes can experience torsion under tension and their Poisson’s ratio decreases with increasing chiral angle within the range from 0° to 45°. Poisson’s ratio of stretched copper and cobalt nanotubes becomes negative at certain chiral angles. A relationship is determined between the uniaxial deformation of nanotubes and their torsion at different chiral angles (reverse Poynting’s effect). As the chiral angle increases, Young’s modulus of nanotubes also increases. Atomistic modeling results are shown to agree qualitatively well with theoretical estimates obtained in the framework of anisotropic elasticity, but with significant quantitative differences for various crystalline materials. |
| Databáze: | OpenAIRE |
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