Measuring elastic property of single-walled carbon nanotubes by nanoindentation: A theoretical framework
| Autor: | Manhong Zhao, Ling Liu, Xi Chen, Qulan Zhou |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Reverse analysis
Materials science Property (programming) Mechanical Engineering Uniaxial compression Stiffness Carbon nanotube Nanoindentation Condensed Matter Physics Finite element method law.invention Mechanics of Materials law Indentation medicine General Materials Science Composite material medicine.symptom Civil and Structural Engineering |
| Zdroj: | Mechanics Research Communications. 35:256-267 |
| ISSN: | 0093-6413 |
| DOI: | 10.1016/j.mechrescom.2008.01.008 |
| Popis: | Nanoindentation is an effective technique for deducing the elastic property of single-walled carbon nanotubes (SWCNTs). Following an atomistic study of the nanoindentation mechanism, reverse analysis algorithms are proposed by utilizing the indentation force-depth data measured from the initial uniaxial compression and post-buckling regimes, respectively, which lead to stretching stiffness of 382 Pa m and 429 Pa m, that are very close to those in the literature. Parallel finite element simulations incorporating atomic interactions are also carried out, which closely duplicates the indentation response of SWCNTs in atomistic simulations. The numerical studies carried out in this paper may be used to guide the nanoindentation experiments, explain and extract useful data from the test, as well as stimulate new experiments. |
| Databáze: | OpenAIRE |
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