Modelling of damage and failure within polymeric adhesives

Within this contribution, we propose a fully thermo‐mechanical coupled isotropic damage model for polymeric adhesives under finite strains. This model is based on the multiplicative decomposition of the deformation gradient into mechanical and thermal parts. We consider rate‐dependent damage behavio...

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Veröffentlicht in:Proceedings in applied mathematics and mechanics 2023-12, Vol.23 (4), p.n/a
Hauptverfasser: Lamm, Lukas, Sistig, Jan, Pfeifer, Jan Mirco, Holthusen, Hagen, Felder, Sebastian, Brepols, Tim, Reese, Stefanie
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container_title Proceedings in applied mathematics and mechanics
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creator Lamm, Lukas
Sistig, Jan
Pfeifer, Jan Mirco
Holthusen, Hagen
Felder, Sebastian
Brepols, Tim
Reese, Stefanie
description Within this contribution, we propose a fully thermo‐mechanical coupled isotropic damage model for polymeric adhesives under finite strains. This model is based on the multiplicative decomposition of the deformation gradient into mechanical and thermal parts. We consider rate‐dependent damage behaviour (e.g. creep damage) of the material by applying a Perzyna‐type ansatz for the damage evolution equations. To overcome the pronounced mesh dependencies which would result from the usage of a local damage model, we make use of a gradient‐extended damage formulation. Besides the main aspects of model, we show the thermodynamically consistent derivation of constitutive quantities as well as the numerical treatment of the governing equations. Finally, we show selected numerical examples to demonstrate the capabilities of the model.
doi_str_mv 10.1002/pamm.202300010
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title Modelling of damage and failure within polymeric adhesives
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