Thermal effects versus viscoelasticity in ice-rubber friction mechanisms. (October 2021)

• Record Type: Journal Article
• Authors: Hemette, S.; Cayer-Barrioz, J.; Mazuyer, D.
• Is Part Of: Tribology international. Volume 162(2021)
• Publication Date: 2021-10
• Subjects: Adhesion -- Cold environment -- Elastomer -- JKR -- Modelling -- Sliding friction; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2021.107129
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: This work presents an experimental analysis of the friction response of an ice-rubber interface over five decades of sliding velocity and temperature down to − 20 ∘ C, combining in-situ contact visualisation and simultaneous force measurements. Viscoelastic properties of the rubber were varied in terms of glassy temperature transition and elastic modulus. Based on the in-situ contact area measurements, the adhesive and viscoelastic contributions were identified. Even though a bell-shape friction-velocity curve was observed, the classical WLF transform did not allow a description of the friction behaviour. A simple analytical model accounting for the thermal dissipation induced by friction was thus proposed and a dimensionless master curve was obtained with the sliding velocity, regardless of the temperature and the material properties. From this master curve, a predictive friction model was proposed, in which both friction contributions, adhesion-viscoelasticity and thermal dissipation, were multiplicative rather than simply additive. Graphical Abstract: Friction mastercurve, for G varying from 1 to 1.7 MPa, Tg ranging from − 40 ∘ C and − 50 ∘ C and environmental temperature between − 15 ∘ C and 0 ∘ C ga1 Highlights: Ice-rubber friction over five decades of sliding speeds and temperature down to − 20 ∘ C. Investigation of the adhesive and viscoelastic contributions. Analytical modelling of the thermal dissipation. Friction mastercurve, regardless of viscoelasticity and environmental temperature. Multiplicative viscoelastic-thermal contributions to friction mechanisms.