DocumentCode :
3710743
Title :
The development of a finite element contact model of a rough surface applied to a Au-coated carbon nanotube composite
Author :
Hong Liu;John W. McBride;Michael P. Down;Suan Hui Pu
Author_Institution :
University of Southampton Malaysia Campus, Johor Bahru, Malaysia
fYear :
2015
Firstpage :
214
Lastpage :
221
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 μm. 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.
Keywords :
"Rough surfaces","Surface roughness","Data models","Finite element analysis","Gold","Contacts","Substrates"
Publisher :
ieee
Conference_Titel :
Electrical Contacts (Holm), 2015 IEEE 61st Holm Conference on
Type :
conf
DOI :
10.1109/HOLM.2015.7355100
Filename :
7355100
Link To Document :
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