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@ARTICLE{Persson:1044413,
      author       = {Persson, Bo},
      title        = {{C}ontact mechanics for layered materials: {R}ubber film on
                      hard substrate},
      journal      = {The journal of chemical physics},
      volume       = {162},
      number       = {21},
      issn         = {0021-9606},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2025-03176},
      pages        = {214702},
      year         = {2025},
      abstract     = {I consider the contact mechanics for a layered material,
                      consisting of an elastically soft film glued to a hard
                      substrate. I calculate the area of real contact for surfaces
                      with fractal-like roughness and for surfaces with roughness
                      in narrow length scale regions. For the fractal-like
                      surfaces, when the product q0d of the film thickness d and
                      the low cut-off wavenumber q0 of the surface roughness power
                      spectrum satisfy q0d < 0.1, the effective modulus becomes
                      very large. This results in large contact stresses, which
                      can induce plastic deformation or wear, in particular during
                      sliding contact. I also calculate the probability
                      distributions of the normal and tangential stresses at the
                      film-substrate interface. If the tangential (shear) stress
                      is too high, the adhesive bond between the film and the
                      substrate will break. I compare the thin-film contact
                      mechanics problem with the Gent solution for a thin elastic
                      sheet confined between two flat solid surfaces, and discuss
                      the origin of the difference in effective elastic modulus.},
      cin          = {PGI-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-1-20110106},
      pnm          = {5211 - Topological Matter (POF4-521)},
      pid          = {G:(DE-HGF)POF4-5211},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {40459356},
      UT           = {WOS:001506905700017},
      doi          = {10.1063/5.0274655},
      url          = {https://juser.fz-juelich.de/record/1044413},
}