Baloglu, Maximilian Volkan, M.Sc. (hons.)

Material modelling of sheet-layered lamination stacks

(Own Funds)

Project leader: Kai Willner
Project members: Maximilian Volkan Baloglu
Start date: 1. January 2015

Abstract:

The numerical simulation of sheet-layered lamination stacks, which can be found in electric motors and transformers, is a challenging task in structural mechanics due to the layout of these components.  Depending on the manufacturing process, these sheets are either in frictional contact to each other or are linked together with the help of a bonding varnish. Especially the interlayer between individual sheets and their interaction have a strong influence on the structure and may be responsible for a nonlinear deformation behavior. In the context of performance and computational effort, it is desirable to avoid a full Finite-Element simulation incorporating every layer such that homogenization techniques are used in this project to derive a sophisticated surrogate material model, which takes the special micro-structure of these lamination stacks into account.

Publications:

• Baloglu MV., Willner K.:
  Material modelling of a sheet-layered lamination stack by homogenization
  In: Proceedings in Applied Mathematics and Mechanics 16 (2016), p. 509 - 510
  ISSN: 1617-7061
  DOI: 10.1002/pamm.201610243
  URL: http://onlinelibrary.wiley.com/doi/10.1002/pamm.201610243/epdf
• Baloglu MV., Willner K.:
  Numerical homogenization and simulation of a lamination stack
  Electric Drives Production Conference (EDPC), 2016 6th International (Nürnberg, 30. November 2016 - 1. December 2016)
  In: IEEE (ed.): 2016 6th International Electric Drives Production Conference (EDPC) 2016
  DOI: 10.1109/EDPC.2016.7851316
  URL: http://ieeexplore.ieee.org/document/7851316/
• Baloglu MV., Willner K.:
  Determination of material parameters for a sheet‐layered lamination stack
  In: Proceedings in Applied Mathematics and Mechanics 17 (2017), p. 393-394
  ISSN: 1617-7061
  DOI: 10.1002/pamm.201710166
  URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/pamm.201710166
• Baloglu MV., Willner K.:
  Influence of the Constitutive Contact Law on the Anisotropic Material Parameters of Sheet-Layered Lamination Stacks
  2018 8th International Electric Drives Production Conference (EDPC) (Schweinfurt, 4. December 2018 - 5. December 2018)
  In: IEEE (ed.): 2018 8th International Electric Drives Production Conference (EDPC) 2018
  DOI: 10.1109/EDPC.2018.8658276
  URL: https://ieeexplore.ieee.org/document/8658276
• Baloglu MV., Ziegler M., Franke J., Willner K.:
  Determination of equivalent transversely isotropic material parameters for sheet-layered lamination stacks
  In: Mechanical Systems and Signal Processing 145 (2020), Article No.: 106915
  ISSN: 0888-3270
  DOI: 10.1016/j.ymssp.2020.106915