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      • Department of Mechanical Engineering
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      A computational homogenization framework for soft elastohydrodynamic lubrication

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      Author(s)
      Budt, M.
      Temizer, İlker
      Wriggers, P.
      Date
      2012
      Source Title
      Computational Mechanics
      Print ISSN
      0178-7675
      Publisher
      Springer
      Volume
      49
      Issue
      6
      Pages
      749 - 767
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
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      Abstract
      The interaction between microscopically rough surfaces and hydrodynamic thin film lubrication is investigated under the assumption of finite deformations. Within a coupled micro-macro analysis setting, the influence of roughness onto the macroscopic scale is determined using FE 2-type homogenization techniques to reduce the overall computational cost. Exact to within a separation of scales assumption, a computationally efficient two-phase micromechanical test is proposed to identify the macroscopic interface fluid flux from a lubrication analysis performed on the deformed configuration of a representative surface element. Parameter studies show a strong influence of both roughness and surface deformation on the macroscopic response for isotropic and anisotropic surfacial microstructures.
      Keywords
      Finite deformation
      Homogenization
      Reynolds equation
      Surface roughness
      Computational costs
      Computational homogenization
      Computationally efficient
      Permalink
      http://hdl.handle.net/11693/28214
      Published Version (Please cite this version)
      http://dx.doi.org/10.1007/s00466-012-0709-7
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