Abstract
In this paper, the mechanical properties, such as the axial and radial Young's moduli, shear moduli, buckling loads and natural frequencies, of single-walled carbon nanotubes, are estimated by a finite element approach. Each carbon nanotube is simulated as a frame-like structure and the primary bonds between two nearest-neighboring atoms are treated as isotropic beam members with a uniform circular cross-section. In the modeling work, the BEAM4 element in commercial code ANSYS is selected to simulate the carbon bonds and the atoms are nodes. As to the input parameters of the BEAM4 element, they are determined via the concept of energy equivalence between molecular dynamics and structural mechanics, and represented in terms of the force constants of the carbon bonds found in molecular mechanics. Based on this modeling concept, finite element models of both armchair and zigzag types of carbon nanotubes with different sizes are established and the mechanical properties of these tubes are then effectively predicted. Most of the computed results which can be compared with existing results show good agreement. Moreover, the effects of tube diameter, length etc., on the mechanical properties are also investigated.
| Original language | English |
|---|---|
| Title of host publication | Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007) |
| Publisher | Trans Tech Publications |
| Pages | 937-942 |
| Number of pages | 6 |
| ISBN (Print) | 0878493999, 9780878493999 |
| Publication status | Published - 2008 Jan 1 |
| Event | 7th International Conference on Fracture and Strength of Solids, FEOFS 2007 - Urumqi, China Duration: 2007 Aug 27 → 2007 Aug 29 |
Publication series
| Name | Advanced Materials Research |
|---|---|
| Volume | 33-37 PART 2 |
| ISSN (Print) | 1022-6680 |
Other
| Other | 7th International Conference on Fracture and Strength of Solids, FEOFS 2007 |
|---|---|
| Country | China |
| City | Urumqi |
| Period | 07-08-27 → 07-08-29 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Mechanical properties of single-walled carbon nanotubes - A finite element approach. / Fan, Cheng Wen; Huang, Jhih Hua; Hwu, Chyanbin; Liu, Yu Yang.
Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007). Trans Tech Publications, 2008. p. 937-942 (Advanced Materials Research; Vol. 33-37 PART 2).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Mechanical properties of single-walled carbon nanotubes - A finite element approach
AU - Fan, Cheng Wen
AU - Huang, Jhih Hua
AU - Hwu, Chyanbin
AU - Liu, Yu Yang
PY - 2008/1/1
Y1 - 2008/1/1
N2 - In this paper, the mechanical properties, such as the axial and radial Young's moduli, shear moduli, buckling loads and natural frequencies, of single-walled carbon nanotubes, are estimated by a finite element approach. Each carbon nanotube is simulated as a frame-like structure and the primary bonds between two nearest-neighboring atoms are treated as isotropic beam members with a uniform circular cross-section. In the modeling work, the BEAM4 element in commercial code ANSYS is selected to simulate the carbon bonds and the atoms are nodes. As to the input parameters of the BEAM4 element, they are determined via the concept of energy equivalence between molecular dynamics and structural mechanics, and represented in terms of the force constants of the carbon bonds found in molecular mechanics. Based on this modeling concept, finite element models of both armchair and zigzag types of carbon nanotubes with different sizes are established and the mechanical properties of these tubes are then effectively predicted. Most of the computed results which can be compared with existing results show good agreement. Moreover, the effects of tube diameter, length etc., on the mechanical properties are also investigated.
AB - In this paper, the mechanical properties, such as the axial and radial Young's moduli, shear moduli, buckling loads and natural frequencies, of single-walled carbon nanotubes, are estimated by a finite element approach. Each carbon nanotube is simulated as a frame-like structure and the primary bonds between two nearest-neighboring atoms are treated as isotropic beam members with a uniform circular cross-section. In the modeling work, the BEAM4 element in commercial code ANSYS is selected to simulate the carbon bonds and the atoms are nodes. As to the input parameters of the BEAM4 element, they are determined via the concept of energy equivalence between molecular dynamics and structural mechanics, and represented in terms of the force constants of the carbon bonds found in molecular mechanics. Based on this modeling concept, finite element models of both armchair and zigzag types of carbon nanotubes with different sizes are established and the mechanical properties of these tubes are then effectively predicted. Most of the computed results which can be compared with existing results show good agreement. Moreover, the effects of tube diameter, length etc., on the mechanical properties are also investigated.
UR - http://www.scopus.com/inward/record.url?scp=45749144778&partnerID=8YFLogxK
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M3 - Conference contribution
AN - SCOPUS:45749144778
SN - 0878493999
SN - 9780878493999
T3 - Advanced Materials Research
SP - 937
EP - 942
BT - Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
PB - Trans Tech Publications
ER -