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Numerical studies of electrical contacts of carbon nanotubes-embedded epoxy under tensile loading
- Source :
- Acta Mechanica. 229:99-107
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- Numerical studies were performed to determine electrical contacts in carbon nanotubes (CNTs)-embedded epoxy under quasi-static tensile loading conditions. A realistic CNT network in epoxy was generated by random orientation and waviness by employing the Monte Carlo method. Two kinds of contacts between CNTs, namely Type-I (overlap) and Type-II (in-plane), were considered in generating a conductive network. A commercial finite element package, COMSOL, was used to determine the distance between these contacts and variation of these contacts during elastic deformation under tensile loading. Numerical predictions were later compared with the analytical results derived from experimental findings. The effect of initial f-ratio and the amount of waviness of CNTs on the variation of f-ratio (which is determined as a ratio of Type-II contacts to total contacts) was investigated as a function of axial strain. The initial f-ratio as well as the extent of waviness showed a significant effect on the change in the type of contacts with increasing axial strain values.
- Subjects :
- 010302 applied physics
Materials science
Waviness
Mechanical Engineering
Computational Mechanics
02 engineering and technology
Carbon nanotube
Epoxy
021001 nanoscience & nanotechnology
01 natural sciences
Finite element method
Electrical contacts
law.invention
law
visual_art
0103 physical sciences
Solid mechanics
Ultimate tensile strength
visual_art.visual_art_medium
Composite material
0210 nano-technology
Electrical conductor
Subjects
Details
- ISSN :
- 16196937 and 00015970
- Volume :
- 229
- Database :
- OpenAIRE
- Journal :
- Acta Mechanica
- Accession number :
- edsair.doi...........2dab5db3b939ce90784e22d5a659ea2b