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A unified physically-based finite deformation model for damage growth in composites
RISE Research Institutes of Sweden, Materials and Production, Polymeric Materials and Composites.ORCID iD: 0000-0002-2940-5752
Gestamp Hardtech AB, Sweden.
RISE Research Institutes of Sweden, Materials and Production, Polymeric Materials and Composites.ORCID iD: 0000-0002-2627-3280
University Rey Juan Carlos, Spain.
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2022 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 161, article id 107103Article in journal (Refereed) Published
Abstract [en]

Two 3D homogenized models for damage growth in a unidirectional (UD) composite ply are simplified and merged into a unified model. The fibre kinking behaviour is based on fibre kinking theory handled in a finite deformation framework. The nonlinear shear behaviour is pressure dependent and is modelled by combining damage and friction on the fracture plane. Fibre kinking growth and transverse behaviour are modelled with a single damage variable. This allows both modes to occur simultaneously and mutually influence each other in an efficient and physically-based way. For validation the model is tested against micro-mechanical Finite Element (FE) simulations under pure longitudinal compression and influenced by shear. The results show nearly perfect agreement for stiffness, strength and crushing stress. The model validation is performed against two different components under three-point bending and a quasi-static crash scenario. Both simulation show good correlation with experiments, validating thus the present unified model. © 2022 The Author(s)

Place, publisher, year, edition, pages
Elsevier Ltd , 2022. Vol. 161, article id 107103
Keywords [en]
Continuum damage modelling, Crash, Fibre kinking, Continuum damage mechanics, Fibers, Continuum damage model, Damage growth, Deformation modeling, Fiber-kinking, Finite deformations, Homogenized model, Physically based, Unidirectional composites, Unified Modeling, Deformation
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:ri:diva-60052DOI: 10.1016/j.compositesa.2022.107103Scopus ID: 2-s2.0-85135300033OAI: oai:DiVA.org:ri-60052DiVA, id: diva2:1692996
Note

Funding details: 2016-04239; Funding details: Energimyndigheten, 50179-1; Funding text 1: This work was funded by Energimyndigheten (Swedish Energy Agency) , project number 50179-1 ; and co-funded by Gestamp Hardtech . The authors are also grateful for access to complementary material data from Volvo Cars and experimental data for the crash tube from Volvo Trucks, obtained within the project “FFI-Crash 2” (Dnr 2016-04239), jointly funded by the industry and the Swedish Innovation Agency Vinnova .

Available from: 2022-09-05 Created: 2022-09-05 Last updated: 2023-06-07Bibliographically approved

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Costa, SergioOlsson, Robin

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