Mechanical properties of single-walled carbon nanotubes - A finite element approach

Cheng Wen Fan, Jhih Hua Huang, Chyanbin Hwu, Yu Yang Liu

研究成果: Conference contribution

20 引文 斯高帕斯(Scopus)

摘要

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.

原文English
主出版物標題Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
發行者Trans Tech Publications
頁面937-942
頁數6
ISBN(列印)0878493999, 9780878493999
DOIs
出版狀態Published - 2008
事件7th International Conference on Fracture and Strength of Solids, FEOFS 2007 - Urumqi, China
持續時間: 2007 八月 272007 八月 29

出版系列

名字Advanced Materials Research
33-37 PART 2
ISSN(列印)1022-6680

Other

Other7th International Conference on Fracture and Strength of Solids, FEOFS 2007
國家China
城市Urumqi
期間07-08-2707-08-29

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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