Please use this identifier to cite or link to this item:
Publisher DOI: 10.3390/app11073107
Title: On the effect of a rate-dependent work of adhesion in the detachment of a dimpled surface
Language: English
Authors: Papangelo, Antonio 
Keywords: adhesion enhancement; dimple model; patterned surfaces; viscoelasticity; enhancement
Issue Date: 31-Mar-2021
Publisher: Multidisciplinary Digital Publishing Institute
Source: Applied Sciences 11 (7): 3107 (202103-31)
Abstract (english): 
Patterned surfaces have proven to be a valuable design to enhance adhesion, increasing hysteresis and the detachment stress at pull-off. To obtain high adhesive performance, soft materials are commonly, used, which easily conform to the countersurface, such as soft polymers and elastomers. Such materials are viscoelastic; i.e., they show rate-dependent properties. Here, the detachment of two half spaces is studied, one being flat and the other having a dimple in the limit of short range adhesion and a power law rate-dependent work of adhesion, as observed by several authors. Literature results have suggested that the dimpled surface would show pressure-sensitive adhesion, showing two possible adhered states, one weak, in partial contact, and one strong when full contact is achieved. By accounting for a power law rate-dependent work of adhesion, the “weak state” may be much stronger than it was in the purely elastic case, and hence the interface may be much more tough to separate. We study the pull-off detachment stress of the dimpled surface, showing that it weakly depends on the preload, but it is strongly affected by the dimensionless unloading rate. Finally, possible implications of the presented results in the detachment of soft materials from rough substrates are discussed.
DOI: 10.15480/882.3421
ISSN: 2076-3417
Journal: Applied Sciences 
Other Identifiers: doi: 10.3390/app11073107
Institute: Strukturdynamik M-14 
Document Type: Article
Project: Untersuchung und Anwendung komplexer, nichtlinearer, dynamischer Zustände in reiberregten mechanischen Systemen 
Publikationsfonds 2021 
Funded by: Italian Ministry of Education, University and Research
Deutsche Forschungsgemeinschaft (DFG) 
PON Ricerca e Innovazione
More Funding information: A.P. acknowledges the support by the Italian Ministry of Education, University and Research under the Programme Department of Excellence Legge 232/2016 (Grant No. CUP-D94I 18000260001). A.P. is thankful to the DFG (German Research Foundation) for funding the project PA 3303/1-1. A.P. acknowledges support from “PON Ricerca e Innovazione 2014-2020-Azione I.2”– D.D. n. 407, 27/02/2018, bando AIM (Grant No. AIM1895471).
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
Appears in Collections:Publications with fulltext

Files in This Item:
File Description SizeFormat
applsci-11-03107-v2.pdf640,8 kBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Jun 2, 2023


checked on Jun 2, 2023


Last Week
Last month
checked on Jun 29, 2022

Google ScholarTM


Note about this record

Cite this record


This item is licensed under a Creative Commons License Creative Commons