Computational micromechanics evaluation of the effect of fibre shape on the transverse strength of unidirectional composites: An approach to virtual materials design

Herráez, M.; González, C.; Lopes, C.S.; Villoria, Roberto Guzmán de; LLorca, J.; Varela, Tamara Blanco; Sánchez, J.

doi:10.1016/j.compositesa.2016.02.026

Cited by 92 publications

(37 citation statements)

References 29 publications

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“…They appear because of the mismatch in the coefficient of thermal expansions between resin and fibers and between part and mould [118,119], as well as because of the volumetric changes in the resin during cure. Residual stresses are only partially relieved after demoulding leading to part distortion [119] as well as strength reductions [120][121][122]. Accurate predictions of the residual stress state at the micro and meso level require the use of specific models to account for the evolution of the viscoelastic response of the resin during manufacturing and, particularly, from the gelation point until the end of the process [124,125].…”

Section: Virtual Processingmentioning

confidence: 99%

“…Thus, computational micromechanics has become a powerful and versatile simulation tool that can be used to study the effect of the different microstructural parameters on the material behaviour without the need of extensive and costly experimental campaigns. This virtual material design approach can be used to optimize the microstructure or, for instance, to explore the influence of fiber shape on the mechanical response of the material [120]. The around the fibers [171].…”

Section: In Situ Micromechanical Characterization Of Interface Propermentioning

confidence: 99%

See 1 more Smart Citation

Structural composites for multifunctional applications: Current challenges and future trends

González

Vilatela

Molina-Aldareguía

et al. 2017

Progress in Materials Science

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233

132

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This review paper summarizes the current state-of-art and challenges for the future developments of fiber-reinforced composites for structural applications with multifunctional capabilities. After a brief analysis of the reasons of the successful incorporation of fiberreinforced composites in many different industrial sectors, the review analyzes three critical factors that will define the future of composites. The first one is the application of novel fiberdeposition and preforming techniques together with innovative liquid moulding strategies, which will be combined by optimization tools based on novel multiscale modelling approaches, so fiber-reinforced composites with optimized properties can be designed and manufactured for each application. In addition, composite applications will be enhanced by the incorporation of multifunctional capabilities. Among them, electrical conductivity, energy storage (structural supercapacitors and batteries) and energy harvesting (piezoelectric and solar energy) seem to be the most promising ones.

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Section: Virtual Processingmentioning

confidence: 99%

Section: In Situ Micromechanical Characterization Of Interface Propermentioning

confidence: 99%

Structural composites for multifunctional applications: Current challenges and future trends

González

Vilatela

Molina-Aldareguía

et al. 2017

Progress in Materials Science

Self Cite

233

132

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“…Models using the explicit FRC microstructure to study fracture behavior of different types of fiberreinforced materials have appeared in, for example, [10][11][12][13][14][15][16]. Simulating the detailed microstructure at the structural scale is not computationally feasible [17].…”

Section: Introductionmentioning

confidence: 99%

A Stochastic Homogenized Peridynamic Model for Intraply Fracture in Fiber-Reinforced Composites

Mehrmashhadi¹,

Chen²,

Zhao³

et al. 2019

Preprint

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The quasi-static transverse fracture behavior in unidirectional fiber-reinforced composites (FRCs) is investigated using a new intermediately-homogenized peridynamic (IH-PD) model and a fully homogenized peridynamic (FH-PD) model. The novelty in the IH-PD model here is accounting for the topology of the fiber-phase in the transverse sample loading via a calibration to the Halpin-Tsai model. Both models can capture well the measured load-displacement behavior observed experimentally for intraply fracture, without the need for an explicit representation of microstructure geometry of the FRC. The IH-PD model, however, is more accurate and produces crack path tortuosity as well as a non-monotonic load-crack-opening softening curve, similar to what is observed experimentally. These benefits come from the preservation of some micro-scale heterogeneity, stochastically generated in the IH-PD model to match the composite’s fiber volume fraction, while its computational cost is equivalent to that of an FH-PD model. We also present a three-point bending transverse loading case in which the two models lead to dramatically different failure modes: the FH-PD model shows that failure always starts from the off-center pre-notch, while the IH-PD model, when the pre-notch is sufficiently off-center, finds that the composite fails from the center of the sample, not from the pre-notch. Experiments that can confirm these findings are sought.

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“…Recent advances in fibre manufacturing processes have allowed production of fibres of noncircular cross-sections [5], however only limited studies are available in literature on the effects of fibre shape on both damping and stiffness properties. Arnold et al [6] studied numerically the effect of fibre shape and found that it significantly influenced the inelastic response of metal matrix composites.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Agnese and Scarpa [9] experimentally demonstrated a significant increase in damping properties for the case of fibres with a four-lobe star shape, compared to the case of circular cylindrical fibres. Herraez et al [5] investigated the strength of random microstructures comprising random arrays of non-circular fibres under transverse tension and compression, for a fibre volume fraction of 0.5. It was found that composites with lobular fibres exhibited superior strength to that of FRPs with circular fibres under transverse compression.…”

Section: Introductionmentioning

confidence: 99%

Effect of fibre shape and interphase on the anisotropic viscoelastic response of fibre composites

Pathan

Tagarielli

Patsias

2017

Composite Structures

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We perform Monte Carlo analyses of the anisotropic viscoelastic response of random RVEs representing the microstructure of UD fibre composites. Both fibres and matrix are taken as isotropic viscoelastic solids; the fibres have different shapes including circular, elliptical, Reauleaux and star-shaped; they are separated from the matrix by interphase regions of different mechanical properties and thicknesses. The analyses allow determining the sensitivity of the transversely isotropic, viscoelastic response of UD composites to fibre volume fraction, fibre shape, interphase volume fraction and interphase properties.

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Computational micromechanics evaluation of the effect of fibre shape on the transverse strength of unidirectional composites: An approach to virtual materials design

Cited by 92 publications

References 29 publications

Structural composites for multifunctional applications: Current challenges and future trends

Structural composites for multifunctional applications: Current challenges and future trends

A Stochastic Homogenized Peridynamic Model for Intraply Fracture in Fiber-Reinforced Composites

Effect of fibre shape and interphase on the anisotropic viscoelastic response of fibre composites

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