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  • Finite element analysis of natural fiber composites using a self-updating model

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    Javanbakht414562-Accepted.pdf (3.284Mb)
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    Accepted Manuscript (AM)
    Author(s)
    Javanbakht, Zia
    Hall, Wayne
    Virk, Amandeep Singh
    Summerscales, Ohn
    Oechsner, Andreas
    Griffith University Author(s)
    Javanbakht, Zia
    Hall, Wayne
    Year published
    2020
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    Abstract
    The aim of the current work was to illustrate the effect of the fibre area correction factor on the results of modelling natural fibre-reinforced composites. A mesoscopic approach is adopted to represent the stochastic heterogeneity of the composite, i.e. a meso-structural numerical model was prototyped using the finite element method including quasi-unidirectional discrete fibre elements embedded in a matrix. The model was verified by the experimental results from previous work on jute fibres but is extendable to every natural fibre with cross-sectional non-uniformity. A correction factor was suggested to fine-tune both the ...
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    The aim of the current work was to illustrate the effect of the fibre area correction factor on the results of modelling natural fibre-reinforced composites. A mesoscopic approach is adopted to represent the stochastic heterogeneity of the composite, i.e. a meso-structural numerical model was prototyped using the finite element method including quasi-unidirectional discrete fibre elements embedded in a matrix. The model was verified by the experimental results from previous work on jute fibres but is extendable to every natural fibre with cross-sectional non-uniformity. A correction factor was suggested to fine-tune both the analytical and numerical models. Moreover, a model updating technique for considering the size-effect of fibres is introduced and its implementation was automated by means of FORTRAN subroutines and Python scripts. It was shown that correcting and updating the fibre strength is critical to obtain accurate macroscopic response of the composite when discrete modelling of fibres is intended. Based on the current study, it is found that consideration of the effect of flaws on the strength of natural fibres and inclusion of the fibre area correction factor are crucial to obtain realistic results.
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    Journal Title
    Journal of Composite Materials
    Volume
    54
    Issue
    23
    DOI
    https://doi.org/10.1177/0021998320912822
    Copyright Statement
    Javanbakht, Z; Hall, W; Virk, AS; Summerscales, O; Oechsner, A, Finite element analysis of natural fiber composites using a self-updating model, Journal of Composite Materials, 2020, 54 (23), pp. 3275–3286. Copyright 2020 The Authors. Reprinted by permission of SAGE Publications.
    Subject
    Aerospace engineering
    Materials engineering
    Mechanical engineering
    Science & Technology
    Materials Science, Composites
    Materials Science
    Jute
    Publication URI
    http://hdl.handle.net/10072/396760
    Collection
    • Journal articles

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