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 |
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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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