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The development of a finite element contact model of a rough surface applied to a Au-coated carbon nanotube composite

The development of a finite element contact model of a rough surface applied to a Au-coated carbon nanotube composite
The development of a finite element contact model of a rough surface applied to a Au-coated carbon nanotube composite
Multi-walled carbon nanotubes (MWCNTs) coated surfaces have been developed to improve the lifetime of electrical contact of MEMS switches. However, little research has been done on the contact mechanics of the surfaces. The surfaces, usually gold coated, demonstrated a complex structure due to the gold penetrating into MWCNT and a much higher roughness than metal surfaces, with Ra in the order of 1-2 ?m. This study is based on a finite element model of a bi-layered structure model for Au/MWCNT composite that includes the surface roughness. The goal is to build up a model much closer to real surfaces, and real surface data was used in the modeling. It is shown that it is only a few asperities making contact due to the roughness, and the contact area is much smaller than that of smooth surface.
carbon nanotubes, electrical contacts, finite element analysis, gold microswitches, nanocomposites, Au-C, MEMS switchesMWCNTs coated surfacesbi-layered structure modelcontact mechanicselectrical contact lifetimefinite element contact modelgold-coated carbon nanotube compositemultiwalled carbon nanotubesrough surfacesurface roughnessAu/MWCNT compositecontact mechanicsfinite element (FE) modelingData models
214-221
Liu, Hong
e8808574-7eb8-459e-9539-110a1f76e117
McBride, John
d9429c29-9361-4747-9ba3-376297cb8770
Down, Michael
b3bc4b98-ad16-47c3-b411-575696a5da0f
Pu, Suan-Hui
8b46b970-56fd-4a4e-8688-28668f648f43
Liu, Hong
e8808574-7eb8-459e-9539-110a1f76e117
McBride, John
d9429c29-9361-4747-9ba3-376297cb8770
Down, Michael
b3bc4b98-ad16-47c3-b411-575696a5da0f
Pu, Suan-Hui
8b46b970-56fd-4a4e-8688-28668f648f43

Liu, Hong, McBride, John, Down, Michael and Pu, Suan-Hui (2015) The development of a finite element contact model of a rough surface applied to a Au-coated carbon nanotube composite. 2015 IEEE 61st Holm Conference on Electrical Contacts (Holm), San Diego, United States. 10 - 13 Oct 2015. pp. 214-221 . (doi:10.1109/holm.2015.7355100).

Record type: Conference or Workshop Item (Paper)

Abstract

Multi-walled carbon nanotubes (MWCNTs) coated surfaces have been developed to improve the lifetime of electrical contact of MEMS switches. However, little research has been done on the contact mechanics of the surfaces. The surfaces, usually gold coated, demonstrated a complex structure due to the gold penetrating into MWCNT and a much higher roughness than metal surfaces, with Ra in the order of 1-2 ?m. This study is based on a finite element model of a bi-layered structure model for Au/MWCNT composite that includes the surface roughness. The goal is to build up a model much closer to real surfaces, and real surface data was used in the modeling. It is shown that it is only a few asperities making contact due to the roughness, and the contact area is much smaller than that of smooth surface.

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More information

e-pub ahead of print date: October 2015
Published date: 17 December 2015
Venue - Dates: 2015 IEEE 61st Holm Conference on Electrical Contacts (Holm), San Diego, United States, 2015-10-10 - 2015-10-13
Keywords: carbon nanotubes, electrical contacts, finite element analysis, gold microswitches, nanocomposites, Au-C, MEMS switchesMWCNTs coated surfacesbi-layered structure modelcontact mechanicselectrical contact lifetimefinite element contact modelgold-coated carbon nanotube compositemultiwalled carbon nanotubesrough surfacesurface roughnessAu/MWCNT compositecontact mechanicsfinite element (FE) modelingData models
Organisations: Mechatronics, Engineering Science Unit

Identifiers

Local EPrints ID: 389717
URI: http://eprints.soton.ac.uk/id/eprint/389717
PURE UUID: e94f5f01-3032-4213-b1c0-98df5eb035c6
ORCID for Suan-Hui Pu: ORCID iD orcid.org/0000-0002-3335-8880

Catalogue record

Date deposited: 11 Mar 2016 16:26
Last modified: 10 Nov 2021 03:53

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Contributors

Author: Hong Liu
Author: John McBride
Author: Michael Down
Author: Suan-Hui Pu ORCID iD

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