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@ARTICLE{Afferrante:860474,
      author       = {Afferrante, L. and Bottiglione, F. and Putignano, C. and
                      Persson, Bo and Carbone, G.},
      title        = {{E}lastic {C}ontact {M}echanics of {R}andomly {R}ough
                      {S}urfaces: {A}n {A}ssessment of {A}dvanced {A}sperity
                      {M}odels and {P}ersson’s {T}heory},
      journal      = {Tribology letters},
      volume       = {66},
      number       = {2},
      issn         = {1573-2711},
      address      = {Dordrecht},
      publisher    = {Springer Science Business Media B.V.},
      reportid     = {FZJ-2019-01228},
      pages        = {75},
      year         = {2018},
      abstract     = {In this work, we discuss important improvements of asperity
                      models. Specifically, we assess the predictive capabilities
                      of a recently developed multiasperity model, which differs
                      from the original Greenwood and Williamson model by (i)
                      including the coupling between the elastic fields generated
                      by each contact spot, and (ii) taking into account the
                      coalescence among the contact areas, occurring during the
                      loading process. Interaction of the elastic field is
                      captured by summing the contributions, which are
                      analytically known, of the elastic displacements in a given
                      point of the surface due to each Hertzian-like contact spot.
                      The coalescence is instead considered by defining an
                      equivalent contact spot in such a way to guarantee
                      conservation of contact area during coalescence. To evaluate
                      the accuracy of the model, a comparison with fully numerical
                      ‘exact’ calculations and Persson’s contact mechanics
                      theory of elastic rough surfaces is proposed. Results in
                      terms of contact area versus load and separation versus load
                      show that the three approaches give almost the same
                      predictions, while traditional asperity models neglecting
                      coalescence and elastic coupling between contact regions are
                      unable to correctly capture the contact behavior. Finally,
                      very good results are also obtained when dealing with the
                      probability distribution of interfacial stresses and gaps.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
      ddc          = {670},
      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},
      UT           = {WOS:000433167000016},
      doi          = {10.1007/s11249-018-1026-x},
      url          = {https://juser.fz-juelich.de/record/860474},
}