On the effect of geometrical fiber arrangement on damage initiation in CFRPs under transverse tension and compression

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dc.contributor.author Marco Esteban, Miguel
dc.contributor.author Giner, Eugenio
dc.contributor.author Miguélez Garrido, María Henar
dc.contributor.author González, David
dc.date.accessioned 2022-08-25T10:56:27Z
dc.date.available 2023-10-15T23:00:07Z
dc.date.issued 2021-10-15
dc.identifier.bibliographicCitation Composite Structures, (2021), v. 274, 114360
dc.identifier.issn 0263-8223
dc.identifier.uri http://hdl.handle.net/10016/35591
dc.description.abstract The mechanical performance of composite materials is strongly dependent on its microstructure. Efficient design of composites requires proper estimation of the effect of the microstructure on residual stresses that arising from cooling due to manufacturing temperature. The study of the stresses and damage in fibres interface and its relationship with geometrical distribution of the fibres can contribute to a better comprehension of the mechanical response of the composite. We use 2D numerical models to represent a composite material reinforced with longitudinal fibres. The mechanical behaviour is analysed taking into account the cooling effect and tension/compression transverse loading. We have generated a range of virtual microstructures, characterized by the microstructure randomness, to study the influence of the fiber randomness on the damage initiation. Damage initiation at fibres interfaces has been estimated from the stresses induced at the interface, both in the whole structure and for individual fibers. As expected, a strong effect of the randomness of the fiber arrangement on the damage initiation has been found. For all microstructures and loading modes, higher values of microstructure randomness results in earlier damage development. Normal and shear stresses at individual fibre interfaces have been analysed under tension and compression loading. In tension, normal stress at the fiber interface fully dominates the interfacial damage initiation. In compression, damage is almost completely dominated by the interfacial tangential stress. In compression, localized plasticity develops simultaneously with damage initiation whereas in tension, damage initiation occurs at a stress three times lower than the required for the onset of plasticity. The maximum shear and normal stresses around individual fibers are strongly affected by the local neighborhood.
dc.description.sponsorship The authors gratefully acknowledge the funding support received from the Spanish Ministerio de Ciencia e Innovación and the FEDER operation program for funding the projects DPI2017‐89197‐C2‐1‐R and DPI2017‐89197‐C2‐2‐R.
dc.format.extent 10
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2021 Elsevier Ltd. All rights reserved.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Interface damage
dc.subject.other Random fiber distributions
dc.subject.other Cooling effect
dc.subject.other Periodic boundary conditions
dc.title On the effect of geometrical fiber arrangement on damage initiation in CFRPs under transverse tension and compression
dc.type article
dc.description.status Publicado
dc.subject.eciencia Ingeniería Mecánica
dc.identifier.doi https://doi.org/10.1016/j.compstruct.2021.114360
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. DPI2017-89197-C2-1-R
dc.relation.projectID Gobierno de España. DPI2017‐89197‐C2‐2‐R
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 114360
dc.identifier.publicationlastpage 10
dc.identifier.publicationtitle COMPOSITE STRUCTURES
dc.identifier.publicationvolume 274
dc.identifier.uxxi AR/0000029383
carlosiii.embargo.terms 2023-10-15
dc.contributor.funder Ministerio de Ciencia e Innovación (España)
dc.affiliation.dpto UC3M. Departamento de Ingeniería Mecánica
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Tecnologías de Fabricación y Diseño de Componentes Mecánicos y Biomecánicos
dc.affiliation.area UC3M. Área de Ingeniería Mecánica
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