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Modelling of kink-band growth based on the geometrically non-linear theory
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.ORCID iD: 0000-0001-9507-3023
RISE - Research Institutes of Sweden, Materials and Production, SICOMP.ORCID iD: 0000-0002-8463-7863
2016 (English)In: ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials, 2016Conference paper, Published paper (Other academic)
Abstract [en]

We propose a new and computationally ecient continuum damage based model, able to predict fibre /matrix shear failure under longitudinal compression for a UD ply. A structure tensor based continuum damage formulation is placed in context with the UD ply, where the elastic material response is governed by transverse isotropy. To represent the proper energy dissipation, an elastic damage model is formulated in the invariants of fibre/matrix shear and fibre compression, including failure initiation and progressive damage modeling. We are guided by the anisotropic elastic model to define four strain invariants, representing key features of the UD-ply microstructure. The damage model is applied to a Non-Crimp Fabric (NCF) composite and compared to a state of the art model based on kinking theory [6]. Instead of invoking the geometric instability into the material model, a key feature is to consider the geometrical fibre kinking instability on the macro-level based on a finite strain formulation

Place, publisher, year, edition, pages
2016.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-36106ISBN: 9783000533877 (print)OAI: oai:DiVA.org:ri-36106DiVA, id: diva2:1262229
Conference
17th European Conference on Composite Materials (ECCM 2016), June 26-30, 2016, Munich, Germany
Available from: 2018-11-09 Created: 2018-11-09 Last updated: 2019-06-25Bibliographically approved

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Rouhi, MohammadGutkin, Renaud

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