A novel interface constitutive model for prediction of stiffness and strength in 3D braided composites

Zhang, Chao; Curiel-Sosa, J.L.; Bui, Tinh Quoc

doi:10.1016/j.compstruct.2016.12.042

Cited by 96 publications

(34 citation statements)

References 33 publications

(30 reference statements)

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“…Solving the mesoscale iteration at every guess, the RVE is computed, and then, the information is passed to macroscale. The homogenization procedures are explained more in [18], [19] and [20].…”

Section: Mean Field Homogenizationmentioning

confidence: 99%

Aeroelastic assessment of cracked composite plate by means of fully coupled finite element and Doublet Lattice Method

Abdullah

Curiel-Sosa

Akbar

2018

Composite Structures

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This paper presents an investigation on flutter speed of cracked composite plates. This work is divided into two sections: (a) variation of crack length at a fixed location on the plate, and (b) variation of crack location on the plate with a fixed crack length, modelled as a unidirectional composite for 0 0 , 90 0 and 135 0 orientations. Mori-Tanaka homogenization model is applied to obtain the effective composite constitutive properties as the function of fiber and matrix volume fraction. Doublet Lattice Method (DLM) is used to calculate the unsteady aerodynamic forces, i.e., lift distributions. It is found that the existence of small crack ratio on the composite plate (less than 0.4) has triggered an increment of the flutter speed. To support this statement, flutter response modes for each crack ratio are plotted, where the structure appears to be more stiffened than the undamaged plate. However, the crack results in the reduction of flutter speed when the crack ratio reaches 0.5. For the crack location assessment, the flutter speed increases as the crack location moves from the root to the tip due to the reduction of flutter frequency. The results show a good agreement with the validation using Strip Theory considering unsteady aerodynamics.

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Section: Mean Field Homogenizationmentioning

confidence: 99%

Aeroelastic assessment of cracked composite plate by means of fully coupled finite element and Doublet Lattice Method

Abdullah

Curiel-Sosa

Akbar

2018

Composite Structures

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“…Recently a few researchers are moving to digital prediction, the numerical method is being used to analyze the static and dynamic properties of 3D braided composite. In order to avoid the time consuming and costly experiments, usually the unit cell based model was used to predict the stiffness and strength . Zhang et al studied the homogenization of 3D braided composite based on the unit cell geometry model .…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al studied the homogenization of 3D braided composite based on the unit cell geometry model . Xu studied the failure behavior of meso‐scale unit cell of 3D braided composite. Considering the importance of notch test as a measure of the damage tolerance characteristics of structural composites, this paper studies the influence of fiber architecture on the notch strength of 3D braided composites under tensile and compressive loading.…”

Section: Introductionmentioning

confidence: 99%

Open hole tension and compression behavior of 3D braided composites

et al. 2020

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The damage tolerant behavior of 3D braided composites is evaluated in terms of the open‐hole notch strength test under tensile and compressive loading. The influence of fiber architecture is evaluated by comparing 3D braid with and without axial yarns as well as laminated composites based on ASTM quasi‐static tension and compression testing standard. The results show that the notched and un‐notched properties of the two types of 3D braided composites are similar under tension and compression loading. Comparing to laminates, both types of 3D braided composites demonstrated superior notch insensitivity than laminated composites. For the failure behavior of the 3D braided composites, under tension loading, crack of both notched specimens tends to propagate along the notch and finally render the specimen to failure. Clear cracks usually presented on the samples without axial yarns, while not for the specimens with axial yarn. Under compression loading, the two types of 3D braided composite are also macroscopically similar, showing transverse fracture. The modified Fabric Geometry Model is used to predict the tensile properties of 3D braided composite. The predicted and experimental results are shown to be in good agreement.

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“…These challenges in modelling may lead to significant deviations from the experimental results. Therefore, in this study, for reliable results, it is decided to perform fatigue tests only …”

Section: Introductionmentioning

confidence: 99%

Flexural fatigue damage analyses of recycled rubber‐modified epoxy‐based composites reinforced with alumina fibres

Irez

Bayraktar

Miskioğlu

2019

Fatigue Fract Eng Mat Struct

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Manufacturers have been working towards finding clean and cost‐efficient solutions by utilizing recycled materials to produce new components. Recycled rubber is one such material widely used in aeronautic and automotive industries. In this study, fresh scrap ethylene‐propylene‐diene‐monomer (EPDM) rubber is mixed with epoxy to manufacture novel composites with the addition of alumina (Al2O3) fibres. These composites can potentially be used to manufacture components subjected to cyclic loading, and to ensure reliability of such components, fatigue behaviour of these composites should be evaluated. This article describes the manufacturing of recycled rubber‐modified epoxy‐based ternary composites and their fatigue behaviour as well as toughening mechanisms. Dynamic mechanical analysis (DMA) was performed to determine thermomechanical properties. Three‐point bending and flexural fatigue tests and Shore D hardness measurements were carried out to determine mechanical properties. After static/fatigue fracture, fracture surfaces were observed with scanning electron microscope (SEM) to determine toughening mechanisms in these composites.

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A novel interface constitutive model for prediction of stiffness and strength in 3D braided composites

Cited by 96 publications

References 33 publications

Aeroelastic assessment of cracked composite plate by means of fully coupled finite element and Doublet Lattice Method

Aeroelastic assessment of cracked composite plate by means of fully coupled finite element and Doublet Lattice Method

Open hole tension and compression behavior of 3D braided composites

Flexural fatigue damage analyses of recycled rubber‐modified epoxy‐based composites reinforced with alumina fibres

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