Experimental Investigation of Viscoelastic Rolling Contacts: A Comparison with Theory
- 864 Downloads
We present a detailed experimental investigation on viscoelastic rolling contacts. The tests focus on contact area, penetration and viscoelastic dissipation measurements between a nitrile rubber ball rolling on a glass disc. Each of the measured parameters is shown to be dependent on the rolling speed and normal load and has, therefore, been used to assess the main differences between viscoelastic and linear elastic rolling contacts. Experimental outcomes are compared with numerical predictions of the theory proposed by Carbone and Putignano (J Mech Phys Solid, 2013). A good agreement is found between experiments and theoretical predictions, thus demonstrating the validity of the numerical approach. This has important implications for modelling the behaviour of real viscoelastic materials, whose response is characterised by a wide distribution of relaxation times. The presented methodologies and results can be applied directly or are of relevance to a number of engineering components, such as tires and seals.
KeywordsViscoelastic solids Rolling friction Contact mechanics
CP and GC thank the support of the Italian Ministry of Education, University and Research, within the Projects PON01_02238 and PON02_00576_3333604.
- 1.Carbone, G., Putignano, C.: A novel methodology to predict sliding/rolling friction in viscoelastic materials: theory and experiments. J. Mech. Phys. Solid. (2013). doi: 10.1016/j.jmps.2013.03.005
- 4.Craiem, D., Magin, R.L.: Fractional order models of viscoelasticity as an alternative in the analysis of red blood cell (RBC) membrane mechanics. Phys. Biol. 7, 013001 (2010)Google Scholar
- 13.Vollebregt, E.A.H.: User Guide for CONTACT, J.J. Kalker’s Variational Contact Model, Technical Report TR09-03, version 1.18Google Scholar
- 19.Christensen, R.M.: Theory of Viscoelasticity. Academic Press, New York (1982)Google Scholar
- 24.Halaunbrenner, J., Kubisz, A.: ASLE-ASME Lubrication Conference Paper No. 67-Lub-25 , Chicago (1967)Google Scholar
- 26.Krick, B.A., Vail, J.R., Persson, B.N.J., Sawyer, W.G.: Optical in situ micro tribometer for analysis of real contact area for contact mechanics, adhesion, and sliding experiments. Tribol Lett. doi: 10.1007/s11249-011-9870-y
- 31.Ferry, J.D.: Viscoelastic Properties of Polymers. Wiley, New York (1980)Google Scholar
- 37.Scaraggi, M., Putignano, C., Carbone, G.: Elastic contact of rough surfaces: a simple criterion to make 2D isotropic roughness equivalent to 1D one. Wear 297, 1–2, 5, 811–817 (2013)Google Scholar
- 39.de Vicente, J., Stokes, J.R., Spikes, H.A.: Rolling and sliding friction in compliant, lubricated contact. Proc. IMechE, Part J: J. Eng. Tribol. 220, 55–63 (2006)Google Scholar
- 41.Michael, K.: Advanced Topics in Characterization of Composites. Trafford Publishing, Bloomington, IN (2004)Google Scholar