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Detachment of a rigid flat punch from a viscoelastic material
Citation Link: https://doi.org/10.15480/882.5182
Publikationstyp
Journal Article
Date Issued
2023-04-01
Sprache
English
Author(s)
Papangelo, Antonio
Institut
TORE-DOI
Journal
Volume
71
Issue
2
Start Page
1
End Page
11
Article Number
48
Citation
Tribology Letters 71 (2): 48 (2023-04-01)
Publisher DOI
Scopus ID
We show that the detachment of a flat punch from a viscoelastic substrate has a relatively simple behaviour, framed between the Kendall’s elastic solution at the relaxed modulus and at the instantaneous modulus, and the cohesive strength limit. We find hardly any dependence of the pull-off force on the details of the loading process, including maximum indentation at preload and loading rate, resulting much simpler than the case of a spherical punch. Pull-off force peaks at the highest speeds of unloading, when energy dissipation is negligible, which seems to be in contrast with what suggested by the theories originated by de Gennes of viscoelastic semi-infinite crack propagation which associated enhanced work of adhesion to dissipation.
Subjects
Cohesive models
Crack propagation
Energy balance
Viscoelasticity
DDC Class
600: Technik
Publication version
publishedVersion
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