Micro-mechanical analysis of the in situ effect in polymer composite laminates

Arteiro, Albertino; Catalanotti, G.; Melro, António R.; Linde, Peter; Camanho, P.P.

doi:10.1016/j.compstruct.2014.06.014

Cited by 145 publications

(84 citation statements)

References 61 publications

(120 reference statements)

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“…In the present study, the individual carbon fibres are considered transversely isotropic and linear-elastic [22]. Following Melro et al [41], the diameter of the carbon fibres is the same in the entire RVE.…”

Section: Micro-mechanical Constitutive and Finite Element Modellingmentioning

confidence: 99%

“…An FE model of the thin-ply sublaminate is generated, consisting of three main parts: a micro-mechanical RVE of the 90 • ply, two adjacent homogenised 0 • plies, and the interfaces between the 90 • lamina and the homogenised plies [22]. The RVE of the 90 • ply includes a discrete representation of the fibres, matrix and interfaces between fibres and matrix.…”

Section: Micro-mechanical Constitutive and Finite Element Modellingmentioning

confidence: 99%

“…In a previous work [22], a micro-mechanical finite element (FE) model of a composite sublaminate was proposed to study the mechanics of the in situ effect observed on constrained plies subjected to transverse tensile loading.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Micro-mechanical analysis of the effect of ply thickness on the transverse compressive strength of polymer composites

Arteiro

Catalanotti

Melro

et al. 2015

Composites Part A: Applied Science and Manufacturing

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Please cite this article as: Arteiro, A., Catalanotti, G., Melro, A.R., Linde, P., Camanho, P.P., Micro-mechanical analysis of the effect of ply thickness on the transverse compressive strength of polymer composites, Composites: Part A (2015), doi: http://dx. AbstractA micro-mechanical model is used to study the effect of ply thickness on constrained 90 • plies subjected to transverse compressive loading (in situ effect). For cross-ply sublaminates with conventional, standard-thickness 90 • plies, failure is dominated by fibre-matrix interface cracking and large localised plastic deformation of the matrix, forming a localised band in a plane that is not aligned with the loading direction. Ultra-thin plies show a dispersed damage mechanism, combining wedge cracking with ply fragmentation/separation. Moreover, a transverse crack suppression effect is clearly observed. To the authors' knowledge, it is the first time an in situ effect in transverse compression has been identified. When comparing the results of the micro-mechanical model with the predictions from analytical models for the in situ effect, the same trends are obtained. These results also show that, for realistic ply thicknesses, these analytical models can be considered fairly accurate.

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Section: Micro-mechanical Constitutive and Finite Element Modellingmentioning

confidence: 99%

Section: Micro-mechanical Constitutive and Finite Element Modellingmentioning

confidence: 99%

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Micro-mechanical analysis of the effect of ply thickness on the transverse compressive strength of polymer composites

Arteiro

Catalanotti

Melro

et al. 2015

Composites Part A: Applied Science and Manufacturing

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“…By using the SRVE, many research studies [8][9][10][11][12][13][14][15][16][17] have been conducted to explore the intralaminar fracture of composite materials, which is the most common damage pattern in well-designed composite structures. Arteiro et al [18] further indicated that intralaminar fracture analysis at a microscopic scale was ideal because the modeling of damage presented higher resolution and freedom at this scale. Both fiber/matrix debonding and matrix micro-cracking, which are the two main damage modes of intralaminar fracture and are commonly classified into matrix cracks at a macroscopic scale, can be described subtly during the damage evolution in composites under transverse loading.…”

Section: Introductionmentioning

confidence: 97%

A Numerical Method for Simulating the Microscopic Damage Evolution in Composites Under Uniaxial Transverse Tension

et al. 2015

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In this paper, a new numerical method that combines a surface-based cohesive model and extended finite element method (XFEM) without predefining the crack paths is presented to simulate the microscopic damage evolution in composites under uniaxial transverse tension. The proposed method is verified to accurately capture the crack kinking into the matrix after fiber/matrix debonding. A statistical representative volume element (SRVE) under periodic boundary conditions is used to approximate the microstructure of the composites. The interface parameters of the cohesive models are investigated, in which the initial interface stiffness has a great effect on the predictions of the fiber/matrix debonding. The detailed debonding states of SRVE with strong and weak interfaces are compared based on the surfacebased and element-based cohesive models. The mechanism of damage in composites under transverse tension is described as the appearance of the interface cracks and their induced matrix micro-cracking, both of which coalesce into transversal macro-cracks. Good agreement is found between the predictions of the model and the in situ experimental observations, demonstrating the efficiency of the presented model for simulating the microscopic damage evolution in composites.

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“…These parameters are based on experimental data [24] and also on previous micromechanical simulations [25,26].…”

mentioning

confidence: 99%

The effect of through-thickness compressive stress on mode II interlaminar crack propagation: A computational micromechanics approach

Varandas

Arteiro

Bessa

et al. 2017

Composite Structures

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General rights Copyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractA micromechanics framework for modelling the mode II interlaminar crack onset and propagation in fibre-reinforced composites is presented with the aim of i) modelling the micro-scale failure mechanisms that underlie interlaminar crack propagation, and ii) determining the effect of the through-thickness pressure on mode II fracture toughness. An algorithm for the generation of the fibre distribution is proposed for the generation of three-dimensional Representative Volume Elements (RVEs). Appropriate constitutive models are used to model the different dissipative effects that occur at the crack propagation. Numerical predictions are compared with experiments obtained in previous investigations: it is concluded that the proposed micromechanical model is able to simulate conveniently the interlaminar crack propagation and to take into account the effect of the through-thickness pressure on mode II interlaminar fracture toughness.

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Micro-mechanical analysis of the in situ effect in polymer composite laminates

Cited by 145 publications

References 61 publications

Micro-mechanical analysis of the effect of ply thickness on the transverse compressive strength of polymer composites

Micro-mechanical analysis of the effect of ply thickness on the transverse compressive strength of polymer composites

A Numerical Method for Simulating the Microscopic Damage Evolution in Composites Under Uniaxial Transverse Tension

The effect of through-thickness compressive stress on mode II interlaminar crack propagation: A computational micromechanics approach

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