TY - JOUR
T1 - On the retraction of an adhesive cylindrical indenter from a viscoelastic substrate
AU - Van Dokkum, Jan Steven
AU - Pérez-Ràfols, Francesc
AU - Dorogin, Leonid
AU - Nicola, Lucia
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - Adhesion contact
KW - Boundary Element Method
KW - Indentation
KW - Line contact
UR - http://www.scopus.com/inward/record.url?scp=85113701287&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2021.107234
DO - 10.1016/j.triboint.2021.107234
M3 - Article
AN - SCOPUS:85113701287
SN - 0301-679X
VL - 164
JO - Tribology International
JF - Tribology International
M1 - 107234
ER -