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@ARTICLE{Lorenz:22341,
      author       = {Lorenz, B and Persson, B.N.J. and Dieluweit, S. and Tada,
                      T.},
      title        = {{R}ubber friction: {C}omparison of theory with experiment},
      journal      = {The European physical journal / E},
      volume       = {34},
      issn         = {1292-8941},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-22341},
      pages        = {129},
      year         = {2011},
      note         = {We thank M. Kluppel for the unfilled and filled SB rubber
                      samples. This work, as part of the European Science
                      Foundation EUROCORES Program FANAS, was supported from funds
                      by the DFG and the EC Sixth Framework Program, under
                      contract N ERAS-CT-2003-980409.},
      abstract     = {We have measured the friction force acting on a rubber
                      block slid on a concrete surface. We used both unfilled and
                      filled (with carbon black) styrene butadiene (SB) rubber and
                      have varied the temperature from -10 °C to 100 °C and the
                      sliding velocity from 1 μm/s to 1000 μm/s. We find that
                      the experimental data at different temperatures can be
                      shifted into a smooth master-curve, using the
                      temperature-frequency shifting factors obtained from
                      measurements of the bulk viscoelastic modulus. The
                      experimental data has been analyzed using a theory which
                      takes into account the contributions to the friction from
                      both the substrate asperity-induced viscoelastic
                      deformations of the rubber, and from shearing the area of
                      real contact. For filled SB rubber the frictional shear
                      stress σ(f) in the area of real contact results mainly from
                      the energy dissipation at the opening crack on the exit side
                      of the rubber-asperity contact regions. For unfilled rubber
                      we instead attribute σ(f) to shearing of a thin rubber
                      smear film, which is deposited on the concrete surface
                      during run in. We observe very different rubber wear
                      processes for filled and unfilled SB rubber, which is
                      consistent with the different frictional processes. Thus,
                      the wear of filled SB rubber results in micrometer-sized
                      rubber particles which accumulate as dry dust, which is
                      easily removed by blowing air on the concrete surface. This
                      wear process seams to occur at a steady rate. For unfilled
                      rubber a smear film forms on the concrete surface, which
                      cannot be removed even using a high-pressure air stream. In
                      this case the wear rate appears to slow down after some run
                      in time period.},
      keywords     = {Computer Simulation / Construction Materials / Elastic
                      Modulus / Friction / Materials Testing / Models, Chemical /
                      Rubber: chemistry / Shear Strength / Stress, Mechanical /
                      Surface Properties / Viscosity / Rubber (NLM Chemicals) / J
                      (WoSType)},
      cin          = {IAS-1 / PGI-1 / ICS-7},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      I:(DE-Juel1)ICS-7-20110106},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Chemistry, Physical / Materials Science, Multidisciplinary
                      / Physics, Applied / Polymer Science},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:22139094},
      UT           = {WOS:000301498400001},
      doi          = {10.1140/epje/i2011-11129-1},
      url          = {https://juser.fz-juelich.de/record/22341},
}