Non-twisted and twisted CNT bundles under axial tensile and compressive loads

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

2 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationNanoscience and Technology
PublisherTrans Tech Publications Ltd
Pages1415-1418
Volume121-123
ISBN (print)3908451302, 9783908451303
Publication statusPublished - 2007
Externally publishedYes

Publication series

NameSolid State Phenomena
Volume121-123
ISSN (Print)1012-0394

Conference

TitleChina International Conference on Nanoscience and Technology, ChinaNANO 2005
PlaceChina
CityBeijing
Period9 - 11 June 2005

Abstract

Compressive and tensile properties of non-twisted and twisted carbon nanotube (CNT) bundles are studied using molecular dynamics (MD) simulations. The results reveal that non-twisted CNT bundles exhibit better compressive and tensile properties than twisted CNT bundles. When the twist angle of a CNT bundle is greater than 60°, its buckling load dropped considerably due to the significant curve geometries of the surrounding single-walled carbon nanotubes (SWCNTs). Twisted CNT bundles also do not demonstrate good tensile properties. During tensile loading, the intertube distance in CNT bundle with twisting angle greater than 75° will decrease as the strain increases. This gives rise to increasing intertube van der Waals forces until the intertube distance falls below 2.0Å. At this time, the repulsive force between the SWCNTs suddenly increases causing the SWCNTs to repel one another at junction areas where they overlap. As a result, twisted CNT bundles tend to fail at these junction areas with lower failure load and strain.

Research Area(s)

  • Bundles, Carbon nanotubes, Compression, Molecular dynamics, Tension

Citation Format(s)

Non-twisted and twisted CNT bundles under axial tensile and compressive loads. / Liew, K. M.; Wong, C. H.; Tan, M. J. et al.
Nanoscience and Technology. Vol. 121-123 Trans Tech Publications Ltd, 2007. p. 1415-1418 (Solid State Phenomena; Vol. 121-123).

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review