Adhesion between self-affine rough surfaces: possible large effects in small deviations from the nominally Gaussian case

Publikationstyp
Journal Article
Date Issued
2017-01-13
Sprache
English
Author(s)
Ciavarella, Michele  
Papangelo, Antonio 
Afferrante, Luciano  
Institut
Strukturdynamik M-14  
TORE-URI
http://hdl.handle.net/11420/3820
Journal
Tribology international  
Volume
109
Start Page
435
End Page
440
Citation
Tribology International (109): 435-440 (2017)
Publisher DOI
10.1016/j.triboint.2017.01.003
Scopus ID
2-s2.0-85009786041
Publisher
Elsevier Science
It is shown that even small deviations from the ideal Gaussian random roughness case seem to lead to dramatic increase in adhesion of rough surfaces: this could be due to a finite number of asperities, or to a finite tail in the height distribution, particularly realistic at low fractal dimensions D, which is the case of most practical interest. It is emphasized that the assumption of a perfect Gaussian heigth distribution, including infinite tails, may be a strong one when studying adhesion in rough surfaces.
Subjects
Adhesion
DMT adhesion model
Greenwood-Williamson's theory
Rough surfaces
DDC Class
600: Technik
620: Ingenieurwissenschaften