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@INPROCEEDINGS{Pinto:1028752,
      author       = {Pinto, R. and Welschinger, F. and Giesselmann, N. and
                      Reinshagen, H. and Menzler, Norbert H.},
      title        = {{H}omogenization of fuel cell interconnects to determine
                      the contacting configuration in a stack},
      reportid     = {FZJ-2024-04800},
      pages        = {A1516, 1-7},
      year         = {2024},
      abstract     = {Large scale production of solid oxide fuel cells (SOFCs) is
                      the next step for ensuring cleanenergy conversion. During
                      manufacturing of SOFC stacks, metallic interconnects play
                      avital role in electrical contacting which highly influences
                      the overall stack performance.Therefore, the force applied
                      to a fuel cell stack to establish electrical contact is
                      verycrucial. Different parameters or boundary conditions may
                      cause non-uniform forcedistribution and large plastic
                      deformation in some regions of the active area resulting
                      inlocal damage or hotpots during operation. The phenomena of
                      contact pressure distributionmay be studied more intuitively
                      using Finite Element Methods (FEM). However, due
                      togeometrically complex design of interconnects, simulations
                      on a stack level arecomputationally expensive. Computational
                      homogenization may be used to simplify stacklevel
                      simulations and is also pursued in this work. The focus of
                      this paper is to create afinite element framework using the
                      homogenization approach to understand the effects
                      ofmechanical pressing of the stacking on individual
                      interconnect contacts. This approachwould help reduce the
                      model complexity for stack level FEM simulations and
                      achievefaster computation times. Such a simulation could, in
                      turn give an understanding of themechanical contact pressure
                      distribution in a stack. This, combined with phenomenon
                      likethermal expansion and creep could calculate a
                      theoretical electrical resistance duringoperation. Within
                      the scope of this short paper, the homogenization framework
                      formechanical loading of an interconnect is discussed and a
                      simplified model is created. Theforce-deformation behavior
                      of the model was compared and validated with
                      itscorresponding full-field simulation. This modelling
                      approach may be used to optimizeparameters like stacking
                      force, materials, design of individual contacts, etc. for
                      idealcontact pressures at individual contacts.},
      month         = {Jul},
      date          = {2024-07-02},
      organization  = {16th European SOFC $\&$ SOE Forum,
                       Lucerne (Switzerland), 2 Jul 2024 - 5
                       Jul 2024},
      cin          = {IMD-2},
      cid          = {I:(DE-Juel1)IMD-2-20101013},
      pnm          = {1231 - Electrochemistry for Hydrogen (POF4-123) / SOFC -
                      Solid Oxide Fuel Cell (SOFC-20140602)},
      pid          = {G:(DE-HGF)POF4-1231 / G:(DE-Juel1)SOFC-20140602},
      typ          = {PUB:(DE-HGF)8},
      url          = {https://juser.fz-juelich.de/record/1028752},
}