A role of friction-induced torque in sliding friction of rubber materials. (January 2016)

• Record Type: Journal Article
• Authors: Maegawa, Satoru; Itoigawa, Fumihiro; Nakamura, Takashi
• Is Part Of: Tribology international. Volume 93 Part A(2016)
• Page Start: 182
• Page End: 189
• Publication Date: 2016-01
• Subjects: Rubber -- Friction force -- Friction-induced torque -- Real contact area; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2015.08.030
• Languages: English
• ISSNs: 0301-679X

Abstract

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 PMMA 1 . 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. Highlights: A role of friction-induced torque in sliding friction of rubber materials was discussed. A friction tester was developed to monitor the friction force between a silicon rubber block and PMMA plate. The contact interface between PDMS/PMMA was directly observed using a total reflection optical system. A simplified model that can express the effect of friction-induced torque on friction force was developed.