On the retraction of an adhesive cylindrical indenter from a viscoelastic substrate

Journal article (2021)

Authors

J.S. van Dokkum Team Kevin Rossi - Mechanical, Maritime and Materials Engineering
Francesc Pérez-Ràfols Università degli Studi di Padova
Leonid Dorogin Università degli Studi di Padova
L. Nicola Università degli Studi di Padova, Team Marcel Sluiter - Mechanical, Maritime and Materials Engineering
Research Group
Team Kevin Rossi (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2021 J.S. van Dokkum, Francesc Pérez-Ràfols, Leonid Dorogin, L. Nicola
DOI: https://doi.org/10.1016/j.triboint.2021.107234
More Info
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Published Date

2021

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Research Group

Team Kevin Rossi

Abstract

The retraction of a cylindrical rigid indenter from a viscoelastic substrate is studied by means of an efficient Green's function method. Hysteresis is observed in the load to area relationship in accordance with experimental results. Although our model relaxes many assumptions posed by LEFM-based analytical theories, the results fall between the limits, at high and low retraction velocities, predicted by the theories. Approaching the high velocity instantaneous limit requires, however, very high velocities or Maugis parameter. The work of adhesion is found to change during retraction. A non-dimensional parameter is proposed to estimate the effect of viscoelasticity in adhesive hysteresis.