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A finite-element-based contact resistance model for rough surfaces: Applied to a bilayered Au/MWCNT composite

A finite-element-based contact resistance model for rough surfaces: Applied to a bilayered Au/MWCNT composite
A finite-element-based contact resistance model for rough surfaces: Applied to a bilayered Au/MWCNT composite
Abstract—A gold-coated multi-walled carbon nanotube composite (Au/MWCNT) is used as an electric contact material for low current (<100mA) switching. It is shown that the surface of the composite presents a much higher roughness when compared to pure gold-coated surface. In previous studies, data from nano-indentation tests have been used to construct a finite element (FE) contact model where the Au/MWCNT composite is modeled as a bi-layered structure. In this study, the FE model is adapted to the modified nano-indenation tests with a 1 mm radius gold-coated stainless steel ball, and to enable to predict the contact resistance. Measured rough surface data are used in the modeling. From the simulated contact area, the contact resistance is calculated using established theory. The influence of contact position on the contact resistance is investigated, and an average predicted contact resistance values are shown to be good approximation to measured data.Index Terms—Bi-layered structure, electrical contact resistance models, finite element modeling (FEM), gold-coated carbon nanotube composite (Au/CNT), roughness
Bilayered structure, Contact resistance, electrical contact resistance models, finite-element modeling (FEM), Gold, gold-coated carbon nanotube composite (Au/CNT), Rough surfaces, roughness., Surface resistance, Surface roughness, Surface topography
2156-3950
Liu, Hong
e8808574-7eb8-459e-9539-110a1f76e117
McBride, John W.
d9429c29-9361-4747-9ba3-376297cb8770
Liu, Hong
e8808574-7eb8-459e-9539-110a1f76e117
McBride, John W.
d9429c29-9361-4747-9ba3-376297cb8770

Liu, Hong and McBride, John W. (2018) A finite-element-based contact resistance model for rough surfaces: Applied to a bilayered Au/MWCNT composite. IEEE Transactions on Components Packaging and Manufacturing Technology. (doi:10.1109/TCPMT.2017.2782723).

Record type: Article

Abstract

Abstract—A gold-coated multi-walled carbon nanotube composite (Au/MWCNT) is used as an electric contact material for low current (<100mA) switching. It is shown that the surface of the composite presents a much higher roughness when compared to pure gold-coated surface. In previous studies, data from nano-indentation tests have been used to construct a finite element (FE) contact model where the Au/MWCNT composite is modeled as a bi-layered structure. In this study, the FE model is adapted to the modified nano-indenation tests with a 1 mm radius gold-coated stainless steel ball, and to enable to predict the contact resistance. Measured rough surface data are used in the modeling. From the simulated contact area, the contact resistance is calculated using established theory. The influence of contact position on the contact resistance is investigated, and an average predicted contact resistance values are shown to be good approximation to measured data.Index Terms—Bi-layered structure, electrical contact resistance models, finite element modeling (FEM), gold-coated carbon nanotube composite (Au/CNT), roughness

Text IEEE TCPMT Hong_R_Final - Accepted Manuscript
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Accepted/In Press date: 6 December 2017
e-pub ahead of print date: 9 January 2018
Keywords: Bilayered structure, Contact resistance, electrical contact resistance models, finite-element modeling (FEM), Gold, gold-coated carbon nanotube composite (Au/CNT), Rough surfaces, roughness., Surface resistance, Surface roughness, Surface topography

Identifiers

Local EPrints ID: 418336
URI: https://eprints.soton.ac.uk/id/eprint/418336
ISSN: 2156-3950
PURE UUID: b08d9fa0-f7bf-4e17-b47f-e42193dc1fcc

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Date deposited: 28 Feb 2018 17:30
Last modified: 28 Feb 2018 17:30

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Contributors

Author: Hong Liu
Author: John W. McBride

University divisions

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