2008/10/31 by Julien Scheibert, Alexis Prevost, Georges Debrégeas +3 · 2 citations
Engineering · Physics and Astronomy · #Adhesion, Friction, and Surface Interactions #Electrical Contact Performance and Analysis #Mechanical stress and fatigue analysis #cond-mat.soft #physics.class-ph
paper · pdf · doi:10.1016/j.jmps.2009.08.008
published as Journal of the Mechanics and Physics of Solids 57, 12 (2009) 1921 · 22 pages, 10 figures
arxiv created 2009/05/12 · openalex publication_date 2009/09/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A MEMS-based sensing device is used to measure the normal and tangential stress fields at the base of a rough elastomer film in contact with a smooth glass cylinder in steady sliding. This geometry allows for a direct comparison between the stress profiles measured along the sliding direction and the predictions of an original exact bidimensional model of friction. The latter assumes Amontons' friction law, which implies that in steady sliding the interfacial tangential stress is equal to the normal stress times a pressure-independent dynamic friction coefficient μd, but makes no further assumption on the normal stress field. Discrepancy between the measured and calculated profiles is less than 14% over the range of loads explored. Comparison with a test model, based on the classical assumption that the normal stress field is unchanged upon tangential loading, shows that the exact model better reproduces the experimental profiles at high loads. However, significant deviations remain that are not accounted for by either calculations. In that regard, the relevance of two other assumptions made in the calculations, namely (i) the smoothness of the interface and (ii) the pressure-independence of μd is briefly discussed.