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Fibre lock-up and other mechanisms at large fibre rotations, and their effect on axial compression of composites.
RISE - Research Institutes of Sweden (2017-2019), Materials and Production, SICOMP.ORCID iD: 0000-0002-2627-3280
2018 (English)In: Proc. 18th European Conf. on Composite Materials., European Society for Composite Materials , 2018, article id 3.11-08Conference paper, Published paper (Refereed)
Abstract [en]

This paper studies the sequence of fibre kinking, the fibre lock-up and the subsequent constitutive behaviour. The conditions governing these phenomena are discussed with focus on the conditions for fibre lock-up. Lower bounds for the fibre lock-up angle a and the kink band angle b are derived purely from geometrical conditions for 3D arrays of fibres, with the aim to define the termination of fibre kinking in homogenized material models for FE analysis. It is concluded that the limit of the lock-up angle is 90° for low fibre volume fractions, decreases to about 50° for fibre volume fractions common in high performance composites, and reaches zero for fully packed fibres.

Place, publisher, year, edition, pages
European Society for Composite Materials , 2018. article id 3.11-08
Keywords [en]
fibre kinking, lock-up, 3D fibre array
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:ri:diva-42489Scopus ID: 2-s2.0-85084160509ISBN: 9781510896932 (print)OAI: oai:DiVA.org:ri-42489DiVA, id: diva2:1384410
Conference
18th European Conf. on Composite Materials. Athens, Greece.
Projects
Compcrash 2
Funder
Swedish Energy Agency, 34181-2Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-05-26Bibliographically approved

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Scopushttps://az659834.vo.msecnd.net/eventsairwesteuprod/production-pcoconvin-public/54936182fa234ccc90e95fc52639dc8e

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Olsson, Robin

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