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@ARTICLE{Persson:860458,
      author       = {Persson, Bo and Kovalev, A. and Gorb, S. N.},
      title        = {{S}imple contact mechanics model of the vertebrate
                      cartilage},
      journal      = {Soft matter},
      volume       = {13},
      number       = {37},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2019-01212},
      pages        = {6349 - 6362},
      year         = {2017},
      abstract     = {We study a simple contact mechanics model of the vertebrate
                      cartilage, which includes (bulk) osmotic effects. The
                      surface roughness power spectrum of a pig cartilage is
                      obtained from the measured surface topography. Using the
                      Reynolds equations with fluid flow factors, calculated using
                      the Persson contact mechanics theory and the Bruggeman
                      effective medium theory, we show how the area of contact and
                      the average interfacial separation change with time. We
                      found that in most cases the contact area percolates,
                      resulting in islands of confined fluid which carry most of
                      the external load. Most importantly, we find that the
                      pressure in the area of real contact is nearly independent
                      of the external load, and well below 1 MPa. This allows the
                      surfaces in the area of “real contact”, to be separated
                      (at nanometer range separation distance) by osmotic
                      repulsion, resulting in a very small (breakloose) friction
                      force observed even after a long time of stationary
                      contact.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      $I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
      pnm          = {141 - Controlling Electron Charge-Based Phenomena
                      (POF3-141)},
      pid          = {G:(DE-HGF)POF3-141},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:28868539},
      UT           = {WOS:000411863200009},
      doi          = {10.1039/C7SM00753A},
      url          = {https://juser.fz-juelich.de/record/860458},
}