Publisher DOI: 10.1080/00218464.2019.1685384
Title: On stickiness of multiscale randomly rough surfaces
Language: English
Authors: Violano, Guido 
Afferrante, Luciano 
Papangelo, Antonio 
Ciavarella, Michele 
Keywords: adhesion; Dalhquist criterion; dry adhesion; Stickiness criterion; surface roughness
Issue Date: 2021
Publisher: Taylor & Francis
Source: Journal of Adhesion 97 (6): 509-527 (2021)
Abstract (english): 
A new stickiness criterion for solids having random fractal roughness is derived using Persson’s theory with DMT-type adhesion. As expected, we find that stickiness, i.e. the possibility to sustain macroscopic tensile pressures or else non-zero contact area without load, is not affected by the truncation of the PSD spectrum of roughness at short wavelengths and can persist up to roughness amplitude orders of magnitude larger than the range of attractive forces. With typical nanometre values of the latter, the criterion gives justification to the well-known empirical Dalhquist criterion for stickiness that demands adhesives to have elastic modulus lower than about 1 MPa.
ISSN: 1545-5823
Journal: The journal of adhesion 
Institute: Strukturdynamik M-14 
Document Type: Article
Project: Untersuchung und Anwendung komplexer, nichtlinearer, dynamischer Zustände in reiberregten mechanischen Systemen 
Azione I.2-D.D. n. 407 del 27/02/2018 
Funded by: Deutsche Forschungsgemeinschaft (DFG) 
More Funding information: A.P. acknowledges support from “PON Ricerca e Innovazione 2014-2020 – Azione I.2 – D.D. n. 407, 27/02/2018, bando AIM”. M.C. is thankful to Prof. J.R. Barber and Prof. S. Abbott for some discussions. L.A. acknowledges support from “POR Puglia FESR-FSE 2014-2020 – Azione 1.6, bando Innonetwork”. All authors acknowledge support from the Italian Ministry of Education, University and Research (MIUR) under the program “Departments of Excellence” (L.232/2016).
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