On the effect of shear stresses on the fibre failure behaviour in CFRP

Michaeli, Walter; Mannigel, M.; Preller, Fabian

doi:10.1016/j.compscitech.2008.09.024

Cited by 22 publications

(4 citation statements)

References 5 publications

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“…Let us note that transverse pre-stresses are currently not considered in this study, although several authors have highlighted the strengthening effect of a confining pressure experimentally 32 and analytically, 25 and the less significant influence of transverse tension. 33 The complete failure of the composite occurs when a strain-driven criterion – described later – is reached in the fibers.…”

Section: Unidimensional Micro-buckling Modelmentioning

confidence: 99%

Micro-mechanical prediction of UD laminates behavior under combined compression up to failure: influence of matrix degradation

Feld

Allix

Baranger

et al. 2011

Journal of Composite Materials

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This article aims to model the behavior of carbon fiber-reinforced polymer laminates up to failure and predict the corresponding energy absorption, under mixed loadings involving compression. In Guimard JM, Allix O, Pechnik N and Thévenet P. [Statistical energy and failure analysis of CFRP compression behavior using a uniaxial microbuckling model. J Compos Mater 2007; 41: 2807–2828], a simplified 2D micro-model has been used in order to assess the influence of the fiber misalignment parameters on the micro-structural compression behavior, both in terms of critical stresses and dissipated energies. This article goes further by introducing the influence of a shear pre-stress and by considering an inelastic and damageable constitutive behavior for the matrix and not only an inelastic one as it is done in the literature. Together with fiber waviness, these three parameters are proven to be critical for the simulation of the kinking phenomenon. Particularly, the main effect of the damageable behavior of the matrix is to avoid unrealistically high hardening of the epoxy. This affects the results significantly and allows a better correlation of the model with experimental data. It is shown, by a statistical analysis, that failure stresses are sensitive to both shear pre-stresses and fiber waviness. Dissipated energies and kink-band size are found to be affected by a shear pre-stress as well but rather less sensitive to fiber waviness.

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Section: Unidimensional Micro-buckling Modelmentioning

confidence: 99%

Micro-mechanical prediction of UD laminates behavior under combined compression up to failure: influence of matrix degradation

Feld

Allix

Baranger

et al. 2011

Journal of Composite Materials

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“…In the latter, fibre ends show typical bending failure morphology with a distinct transition between regions failed in tension and regions failed in compression. Finally, when large in-plane shear stresses are combined with the longitudinal compression, the failure mode changes to fibre/ matrix splitting [14,15], in which a crack runs along the fibre/matrix interface across the whole specimen.…”

Section: Introductionmentioning

confidence: 99%

On the transition from shear-driven fibre compressive failure to fibre kinking in notched CFRP laminates under longitudinal compression

Gutkin

Pinho

Robinson

et al. 2010

Composites Science and Technology

133

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“…Compared with the experimental studies (Cox et al, 1994;Higuchi et al, 2015;Michaeli et al, 2009;Warren et al, 2015;Yokozeki et al, 2006) which take a lot of time and cost, the finite element method has drawn more and more attention. Goutianos et al (2004) investigated the effect of fiber discontinuity and compression fiber break on its adjacent fibers by a multifiber model.…”

Section: Introductionmentioning

confidence: 99%

A progressive damage model for 3D woven composites under compression

Guo

Liu

et al. 2018

International Journal of Damage Mechanics

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A progressive damage model is proposed to investigate the damage initiation and evolution of 3D woven composites under uniaxial compression at a micromechanical level. The typical compressive experiments were carried out. Based on the observations, the compression failure modes of 3D woven composites mainly include fiber kinking, transverse failure of fiber tow, matrix fracture, and interfacial debonding. The initial damage criteria are according to the physically based failure criteria for the fiber kinking, the Puck criteria for the transverse failure of fiber tow, and the maximum stress criterion for the matrix. The damage of fiber tow–matrix interfacial is simulated through cohesive contact. Particularly, the fiber’s initial misalignment angle is taken into account in the damage model. The simulated compression results agree well with the experimental ones. The compressive stress–strain response of the 3D woven composite is forecasted. The damage evolution of each constituent of the 3D woven composite is obtained. The results show that the influence of the fiber’s initial misalignment angle on the compression strength of the 3D woven composite needs to be considered.

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On the effect of shear stresses on the fibre failure behaviour in CFRP

Cited by 22 publications

References 5 publications

Micro-mechanical prediction of UD laminates behavior under combined compression up to failure: influence of matrix degradation

Micro-mechanical prediction of UD laminates behavior under combined compression up to failure: influence of matrix degradation

On the transition from shear-driven fibre compressive failure to fibre kinking in notched CFRP laminates under longitudinal compression

A progressive damage model for 3D woven composites under compression

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