Model for contact between finger and sinusoidal plane to evaluate adhesion and deformation component of friction

One of the main parameters affecting finger friction, friction-induced vibrations in the finger, and consequently tactility is surface topography. Recently Skedung et al. performed finger friction measurements on fine controlled surfaces. These surfaces were sinusoidal with wavelengths from 0.27 to...

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Bibliographic Details
Published in:Tribology international 2016-04, Vol.96, p.389-394
Main Authors: Duvefelt, Kenneth, Olofsson, Ulf, Johannesson, Carl Michael, Skedung, Lisa
Format: Article
Language:English
Subjects:
Adhesion
Contact
Contact area
Finger
Fingers
Friction
Mathematical models
Planes
Topography
Ultrasonic testing
Vibration
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Summary:One of the main parameters affecting finger friction, friction-induced vibrations in the finger, and consequently tactility is surface topography. Recently Skedung et al. performed finger friction measurements on fine controlled surfaces. These surfaces were sinusoidal with wavelengths from 0.27 to 8.8µm and amplitudes from 0.007 to 6µm. Building on those tests an analytical model for the contact was developed to explain the differences in friction coefficient. The contact was modelled as trapezoids in a circular pattern pressed against a sinusoidal plane. Results showed that the calculated contact area and therefore friction coefficient corresponded well with the measurements. This model can be used to see how the different surface parameters influence friction. •We modelled the adhesion and deformation component of friction.•Topography on nanolevel had influence on friction.•The model can be used to estimate friction on similar surfaces.
ISSN:0301-679X
1879-2464
1879-2464
DOI:10.1016/j.triboint.2014.12.020