Effect of Stone-Wales Defect on Ultimate Strength of Carbon Nanotubes
In this study, a three-dimensional finite element (FE) model for armchair, zigzag and chiral single-walled carbon nanotubes (SWCNTs) is proposed. To create the FE models, nodes are placed at the locations of carbon atoms and the bonds between them are modeled using three-dimensional elastic beam ele...
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Isfahan University of Technology
2016-06-01
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doaj-c242fc120b754b1ba54e5e305fafc2e82021-02-02T03:19:12ZfasIsfahan University of TechnologyJournal of Advanced Materials in Engineering1025-28512423-57332016-06-013518397Effect of Stone-Wales Defect on Ultimate Strength of Carbon NanotubesD. Yazdani0S.Y. Ahmadi Brooghani1 Department of Mechanical Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran Department of Mechanical Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran In this study, a three-dimensional finite element (FE) model for armchair, zigzag and chiral single-walled carbon nanotubes (SWCNTs) is proposed. To create the FE models, nodes are placed at the locations of carbon atoms and the bonds between them are modeled using three-dimensional elastic beam elements. The FE model is used to investigate the influence of chirality and Stone-Wales defects on the ultimate strength (Ultimate stress and ultimate strain) of SWCNTs. Results indicate that Stone-Wales defect significantly reduces the ultimate stress and strain of armchair CNTs. But this defect has a negligible effect on the ultimate strength of zigzag nanotubes. Based on the results, the crack growth path in zigzag and armchair nanotubes have 90 and 45 degree angle to the long axis of the nanotube, respectively.http://jame.iut.ac.ir/browse.php?a_code=A-10-1-698&slc_lang=en&sid=1Carbon nanotubes Finite element method Stone-Wales defect Ultimate strength |
collection |
DOAJ |
language |
fas |
format |
Article |
sources |
DOAJ |
author |
D. Yazdani S.Y. Ahmadi Brooghani |
spellingShingle |
D. Yazdani S.Y. Ahmadi Brooghani Effect of Stone-Wales Defect on Ultimate Strength of Carbon Nanotubes Journal of Advanced Materials in Engineering Carbon nanotubes Finite element method Stone-Wales defect Ultimate strength |
author_facet |
D. Yazdani S.Y. Ahmadi Brooghani |
author_sort |
D. Yazdani |
title |
Effect of Stone-Wales Defect on Ultimate Strength of Carbon Nanotubes |
title_short |
Effect of Stone-Wales Defect on Ultimate Strength of Carbon Nanotubes |
title_full |
Effect of Stone-Wales Defect on Ultimate Strength of Carbon Nanotubes |
title_fullStr |
Effect of Stone-Wales Defect on Ultimate Strength of Carbon Nanotubes |
title_full_unstemmed |
Effect of Stone-Wales Defect on Ultimate Strength of Carbon Nanotubes |
title_sort |
effect of stone-wales defect on ultimate strength of carbon nanotubes |
publisher |
Isfahan University of Technology |
series |
Journal of Advanced Materials in Engineering |
issn |
1025-2851 2423-5733 |
publishDate |
2016-06-01 |
description |
In this study, a three-dimensional finite element (FE) model for armchair, zigzag and chiral single-walled carbon nanotubes (SWCNTs) is proposed. To create the FE models, nodes are placed at the locations of carbon atoms and the bonds between them are modeled using three-dimensional elastic beam elements. The FE model is used to investigate the influence of chirality and Stone-Wales defects on the ultimate strength (Ultimate stress and ultimate strain) of SWCNTs. Results indicate that Stone-Wales defect significantly reduces the ultimate stress and strain of armchair CNTs. But this defect has a negligible effect on the ultimate strength of zigzag nanotubes. Based on the results, the crack growth path in zigzag and armchair nanotubes have 90 and 45 degree angle to the long axis of the nanotube, respectively. |
topic |
Carbon nanotubes Finite element method Stone-Wales defect Ultimate strength |
url |
http://jame.iut.ac.ir/browse.php?a_code=A-10-1-698&slc_lang=en&sid=1 |
work_keys_str_mv |
AT dyazdani effectofstonewalesdefectonultimatestrengthofcarbonnanotubes AT syahmadibrooghani effectofstonewalesdefectonultimatestrengthofcarbonnanotubes |
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1724308107023089664 |