Stress field at a sliding frictional contact: Experiments and calculations

摘要: Abstract A MEMS-based sensing device is used to measure the normal and tangential stress fields at base of a rough elastomer film in contact with smooth glass cylinder steady sliding. This geometry allows for direct comparison between profiles measured along sliding direction predictions an original exact bidimensional model friction. The latter assumes Amontons’ friction law, which implies that interfacial equal times pressure-independent dynamic coefficient μ d , but makes no further assumption on field. Discrepancy calculated less than 14% over range loads explored. Comparison test model, based classical field unchanged upon loading, shows better reproduces experimental high loads. However, significant deviations remain are not accounted by either calculations. In regard, relevance two other assumptions made calculations, namely (i) smoothness interface (ii) pressure-independence briefly discussed.