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Mesh objective implementation of a fibre kinking model for damage growth with friction
RISE - Research Institutes of Sweden, Swerea, Swerea SICOMP. Chalmers University of Technology, Gothenburg, Sweden.
RISE - Research Institutes of Sweden, Swerea, Swerea SICOMP.
RISE - Research Institutes of Sweden, Swerea, Swerea SICOMP.
2017 (English)In: Composite structures, ISSN 0263-8223, E-ISSN 1879-1085, Vol. 168, 384-391 p.Article in journal (Refereed) Published
Abstract [en]

A newly developed physically based model for the longitudinal response of laminated fibre-reinforced composites during compressive damage growth is implemented in a Finite Element (FE) software. It is a mesoscale model able to capture the physics of kink-band formation by shear instability, the influence of the matrix in supporting the fibres and the rotation of the fibres during compression, resulting in more abrupt failure for smaller misalignments. The fibre kinking response is obtained by solving simultaneously for stress equilibrium and strain compatibility in an FE framework. Strain softening creates pathological sensitivity when the mesh is refined. To make the model mesh objective, a methodology based on scaling the strain with the kink-band width is developed. The FE implementation of the current model is detailed with focus on mesh objectivity, and generalized to irregular meshes. The results show that the current model can be used to predict the whole kinking response in a 3D framework and thus account for the correct energy dissipation.

Place, publisher, year, edition, pages
2017. Vol. 168, 384-391 p.
Keyword [en]
Crushing, Damage mechanics, Fibre kinking, Friction, Mesh objectivity, Energy dissipation, Fiber reinforced plastics, Fibers, Laminated composites, Mesh generation, Fibre reinforced composites, Kink band formations, Longitudinal response, Meso-scale modeling, Physically based modeling, Strain compatibility, Finite element method
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-29316DOI: 10.1016/j.compstruct.2017.02.057Scopus ID: 2-s2.0-85013781749OAI: oai:DiVA.org:ri-29316DiVA: diva2:1095205
Available from: 2017-05-12 Created: 2017-05-12 Last updated: 2017-05-12Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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