Abstract
Herein, the role of friction-induced torque in sliding friction of rubber materials is investigated. A friction tester was developed to monitor the friction force between a silicon rubber block and a surface made of PMMA11PMMA: poly(methyl methacrylate).. Based on the experimental results, a simplified model was developed to express the nonuniform distribution of normal pressure developed due to the friction-induced torque, and the normal pressure dependence of the real contact area based on Persson׳s contact theory. Based on the modeling, the mechanism of the effect of the friction-induced torque on frictional force reductions was clarified.
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