Journal
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
Volume 61, Issue 8, Pages 1822-1834Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jmps.2013.03.005
Keywords
Viscoelastic materials; Friction; Viscoelastic rolling and sliding
Funding
- Italian Ministry of Education, University and Research [PON01_02238, PON02_00576_3333604]
- Pirelli Tyre S.p.A
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In this paper we propose a novel methodology to numerically investigate the steady-state sliding or rolling contact of viscoelastic materials, and in particular to calculate the viscoelastic contribution to friction. The implemented boundary element method relies on a very general mathematical formulation, able to deal either with rolling or sliding contact, and more importantly, able to handle real viscoelastic materials with a large number of relaxation times (e.g. tire rubber), thus overcoming the limitations of other analytical and numerical techniques. The proposed methodology is, then, employed to study the steady state rolling of a smooth rigid sphere on a standard linear viscoelastic solid, and to investigate the rolling contact of a rigid sphere moving on a styrene butadiene rubber. Numerical predictions are compared with existing theoretical investigations and with experiments. In both cases we find an almost perfect agreement. (C) 2013 Elsevier Ltd. All rights reserved.
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