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Modelling the Non-linear fibre and matrix dominated compressive behaviour in unidirectional Fibre-reinforced composites.pdf (1.461Mb)
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Title
Modelling the Non-linear fibre and matrix dominated compressive behaviour in unidirectional Fibre-reinforced composites
Author
Erice, BorjaMondragon Unibertsitatea
Author (from another institution)
Thomson, Daniel
Research Group
Procesos avanzados de conformación de materiales
Published Date
2023
Publisher
Elsevier
Keywords
Plasticity
Fibre misalignment
High strain rate
Anisotropy
Abstract
The mechanical behaviour of unidirectional fibre-reinforced composites is typically assumed to be linear elastic before failure. However, these materials exhibit nonlinear responses while being loaded ... [+]
The mechanical behaviour of unidirectional fibre-reinforced composites is typically assumed to be linear elastic before failure. However, these materials exhibit nonlinear responses while being loaded in the matrix and fibre dominated directions that are generally disregarded. This research explores alternative physically-inspired finite element based modelling approaches that are formulated after the mechanisms behind such nonlinearities. The effect of fibre waviness/misalignment on the elastic modulus corresponding to the fibre direction has been investigated developing a phenomenological model based on the fibre micro-buckling theory. This model has been combined with the localisation plane plasticity, which deals with the matrix-dominated nonlinear deformation, for a complete description of the material’s mechanical behaviour. The proposed combined approach in a single model has shown to be capable of predicting the compressive stress–strain fibre- and matrix-dominated responses of IM7/8552 coupons at various loading rates. [-]
URI
https://hdl.handle.net/20.500.11984/6032
Publisher’s version
https://doi.org/10.1016/j.compstruct.2022.116396
ISSN
1879-1085
Published at
Composite Structures  Vol. 304, Part 2. N. artículo 116396
Document type
Journal Article
Version
Postprint version
Rights
© 2023 Elsevier
Access
Embargoed access
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  • Articles - Engineering [486]

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