Finite element investigation of the elastic modulus of concentric boron nitride and carbon multi-walled nanotubes

The finite element method is used here to study the elastic properties of concentric boron nitride and carbon multi-walled nanotubes. Beam and spring elements are, respectively, employed to model the covalent bonds between atoms and nonbonding van der Waals interactions between atoms located on diff...

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Bibliographic Details
Published in:Journal of the Brazilian Society of Mechanical Sciences and Engineering 2019, Vol.41 (1), p.1-17, Article 34
Main Authors: Rouhi, S., Nikkar, A., Ansari, R.
Format: Article
Language:English
Subjects:
Aspect ratio
Boron
Boron nitride
Carbon
Carbon nanotubes
Chemical bonds
Covalent bonds
Elastic properties
Engineering
Finite element method
Mathematical analysis
Mechanical Engineering
Modulus of elasticity
Silicones
Technical Paper
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Summary:The finite element method is used here to study the elastic properties of concentric boron nitride and carbon multi-walled nanotubes. Beam and spring elements are, respectively, employed to model the covalent bonds between atoms and nonbonding van der Waals interactions between atoms located on different walls. The double-walled and triple-walled nanotubes with different arrangements of boron nitride and carbon nanotubes are considered. It is shown that the elastic modulus of the concentric multi-walled BN and C nanotubes increases by increasing the ratio of nanotube length to its diameter (aspect ratio). In addition, the effect of aspect ratio on the elastic modulus of the armchair nanotubes is larger than that on the elastic modulus of the armchair nanotubes. Comparing the elastic modulus of the double-walled and triple-walled nanotubes, it is observed that the effect of number of walls on the elastic modulus of the concentric boron nitride and carbon multi-walled nanotube is negligible.
ISSN:1678-5878
1806-3691
DOI:10.1007/s40430-018-1511-z