Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Alternative Finite Element Based Modeling Apporaches for Carbon Nanotubes
Date
2017-09-20
Author
Koca, Oğuzhan
Gülaşık, Hasan
Gürses, Ercan
Metadata
Show full item record
Item Usage Stats
154
views
0
downloads
Cite This
Carbon Nanotubes (CNTs) are rolled sheets of graphene which include carbon atoms only. CNTs have attracted the interest of scientists and engineers because of their superior mechanical properties. To this end, significant amount of work has been done for atomistic modeling of CNTs. However, modeling of CNTs with pure atomistic approaches is computationally expensive. Therefore, continuum based approaches such as finite element method (FEM) have alternatively been proposed. The purpose of this work is to compare alternative FE modeling approaches for graphene and CNTs. FE models are created by using the commercial FE software ANSYS APDL. Elastic constants, such as the Young’s modulus, the shear modulus and the Poisson’s ratio, of a single CNT are computed by alternative FE approaches and the results are compared with the literature.
URI
https://hdl.handle.net/11511/71918
file:///C:/Users/dell/Downloads/AIAC-2017-040.pdf
Conference Name
9th Ankara International Aerospace Conference (20 - 22 Eylül 2017)
Collections
Department of Aerospace Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Production of boron nitride nanotubes and their uses in polymer composites
Demir, Can; Sezgi, Naime Aslı; Bayram, Göknur; Department of Chemical Engineering (2010)
Boron nitride nanotubes (BNNTs), firstly synthesized in 1995, are structural analogues of carbon nanotubes (CNTs) with alternating boron and nitrogen atoms instead of carbon atoms. Besides their structure, mechanical and thermal properties of BNNTs are very similar to the remarkable properties of CNTs. However, BNNTs have higher resistance to oxidation than CNTs. Also, BNNTs are electrically isolating. Therefore, they are envisioned as suitable fillers for the fabrication of mechanically and thermally enhan...
Optimization of graphene synthesis by electrochemical exfoliation of graphite
Kurt, Vahit; Aydınol, M. Kadri.; Department of Metallurgical and Materials Engineering (2019)
Graphene is a one atom thick allotrope of carbon that is a honeycomb lattice of carbon atoms. Graphene has a lot of extraordinary properties and these properties cause increasing of interest on it. In addition to high specific surface area, high transparency, high strength, graphene is the material that has best electrical conductivity ever. These properties make graphene a suitable candidate for a lot of applications. Since its discovery, a lot of research has been done about how to produce graphene and ho...
Improvement in mechanical, electrical, and shape memory properties of the polystyrene-based carbon fiber-reinforced polymer composites containing carbon nanotubes
Erkmen, Berrak; Bayram, Göknur (2021-02-01)
Carbon fiber-reinforced polymers based on polystyrene matrix containing elastomer and carbon nanotubes (CNTs) were produced by compression molding. The effects of carbon fabric (CF) concentration and silane treatment on the morphology, mechanical, electrical, and shape memory properties of the multilayer composites were investigated. The SEM analyses showed that fibers of the silane-treated CFs were more homogeneously covered with the polymer layers than the untreated CFs. The tensile strength and modulus o...
Density functional theory and molecular dynamics simulations of carbon nanotubes, polyetheretherketone and their interfaces
Toraman, Gözdenur; Toffoli, Hande; Gürses, Ercan; Department of Physics (2018)
Carbon nanotubes are allotropes of carbon with a cylindrical nanostructure. A nanotube can roughly be described as a rolled-up graphene sheet, which is a two dimensional hexagonal arrangement of carbon atoms, often referred to as a honeycomb lattice. Carbon nanotubes, much like their parent material graphene, are characterized by high strength, high Young modulus, durability and tunable electronic behavior. As a result of these superior properties, CNTs have been used in diverse technologically relevant app...
Optimization of metalization in crystalline silicon solar cells
Demircioğlu, Olgu; Turan, Raşit; Ünalan, Hüsnü Emrah; Department of Micro and Nanotechnology (2012)
Production steps of crystalline silicon solar cells include several physical and chemical processes like etching, doping, annealing, nitride coating, metallization and firing of the metal contacts. Among these processes, the metallization plays a crucial role in the energy conversion performance of the cell. The quality of the metal layers used on the back and the front surface of the cell and the quality of the electrical contact they form with the underlying substrate have a detrimental effect on the amou...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
O. Koca, H. Gülaşık, and E. Gürses, “Alternative Finite Element Based Modeling Apporaches for Carbon Nanotubes,” presented at the 9th Ankara International Aerospace Conference (20 - 22 Eylül 2017), METU, Ankara, Turkey, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/71918.