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Determination of material parameters for a sheet‐layered lamination stack
Author(s) -
Baloglu Maximilian Volkan,
Willner Kai
Publication year - 2017
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201710166
Subject(s) - homogenization (climate) , lamination , isotropy , stack (abstract data type) , tile , materials science , composite material , transverse isotropy , nonlinear system , structural engineering , mechanics , computer science , engineering , layer (electronics) , physics , programming language , biodiversity , ecology , quantum mechanics , biology
The numerical simulation of sheet‐layered lamination stacks is a challenging task in structural mechanics due to the layout of these components. Depending on the manufacturing process, these sheets are either linked together with the help of a bonding varnish or are just packed up and basically free to slip inside of the stack, which can result in a nonlinear deformation behavior. To avoid a full FE‐simulation incorporating every layer, homogenization can be applied to identify a surrogate material model to achieve the desired accuracy by gaining performance. In this paper, a transversely isotropic material model is analytically formulated for a lamination stack with isotropic sheets in contact, which is captured with the help of a linear penalty method. The resulting stress‐strain relation is compared to results obtained by a numerical homogenization. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)