Prediction of the friction coefficient of filled rubber sliding on dry and wet surfaces with self-affine large roughness

• TANAKA Hiro

  Department of Mechanical Engineering, The University of Tokyo Department of Mechanical Engineering, Osaka University

• YOSHIMURA Kimiyasu

  Department of Mechanical Engineering, The University of Tokyo

• SEKOGUCHI Ryo

  Department of Mechanical Engineering, The University of Tokyo

• ARAMAKI Jumpei

  Department of Mechanical Engineering, The University of Tokyo

• HATANO Asuka

  Department of Mechanical Engineering, The University of Tokyo

• IZUMI Satoshi

  Department of Mechanical Engineering, The University of Tokyo

• SAKAI Shinsuke

  Department of Mechanical Engineering, The University of Tokyo

• KADOWAKI Hiroshi

  Central Research Division, Bridgestone Corporation

Abstract

The friction of filled rubber on a rough surface is mainly determined by the rubber viscoelasticity and the surface property of multiple-scale asperities that can be represented by the power spectral density of the surface profile (i.e., power spectrum of surface roughness). This paper investigates a prediction model of rubber friction on dry and wet surfaces with large roughness under lightly squeezing, and finds a high stationary friction coefficient that depends on sliding speed. To this end, we demonstrated friction testing at low velocities with carbon-black-filled rubber and a hard substrate having self-affine surface roughness. From the experiment results, we estimated the hysteresis friction coefficient related to energy dissipation resulting from cyclic deformations of the viscoelastic rubber by applying the theory developed by Persson [(J. Chem. Phys. 115, 3840 (2001)]. We discussed the additional factor, an adhesion force, which also increases the friction coefficient. We concluded that the hysteresis loss of rubber viscoelastic deformation contributes most of the friction force, accounting for the nonlinear viscoelastic behavior of filled rubber, and that the operative surface wavelength extends to the order of micrometers.

Journal

• Mechanical Engineering Journal

  Mechanical Engineering Journal 3 (1), 15-00084-15-00084, 2016

  The Japan Society of Mechanical Engineers

Keywords

• Rubber friction
• Viscoelasticity
• Power spectrum of surface roughness
• Self-affine fractal
• Friction test

Details

• CRID: 1390282680492114688
• NII Article ID: 130005126160
• DOI: 10.1299/mej.15-00084
• ISSN: 21879745
• Web Site: https://www.jstage.jst.go.jp/article/mej/3/1/3_15-00084/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed