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A physically based model for kink-band growth and longitudinal crushing of composites under 3D stress states accounting for friction
RISE, Swerea, SICOMP.ORCID iD: 0000-0002-8463-7863
RISE, Swerea, SICOMP.
RISE, Swerea, SICOMP.ORCID iD: 0000-0002-2627-3280
2016 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 135, p. 39-45Article in journal (Refereed) Published
Abstract [en]

A material model to predict kink-band formation and growth under a 3D stress state is proposed. 3D kinking theory is used in combination with a physically based constitutive law of the material in the kink-band, accounting for friction on the microcracks of the damaged material. In contrast to existing models, the same constitutive formulation is used for fibre kinking and for the longitudinal shear and transverse responses, thereby simplifying the material identification process. The full collapse response as well as a crush stress can be predicted. The model is compared with an analytical model, a micromechanical finite element analysis and crushing tests. In all cases the present model predicts well the different stages of kink-band formation and crushing.

Place, publisher, year, edition, pages
Elsevier Ltd , 2016. Vol. 135, p. 39-45
Keywords [en]
Crushing, Damage mechanics, Fibre kinking, Friction, Tribology, Constitutive formulation, Kink band formations, Longitudinal shear, Material identification, Micromechanical finite element analysis, Physically based modeling, Transverse response, Finite element method
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40971DOI: 10.1016/j.compscitech.2016.09.002Scopus ID: 2-s2.0-84988038674OAI: oai:DiVA.org:ri-40971DiVA, id: diva2:1377044
Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2019-12-10Bibliographically approved

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Gutkin, RenaudOlsson, Robin

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