Mechanical characterization of a unidirectional pultruded composite lamina using micromechanics and numerical homogenization

Xin, Haohui; Mosallam, Ayman; Liu, Yuqing; Veljković, Milan; He, Jun

doi:10.1016/j.conbuildmat.2019.04.191

Cited by 22 publications

(11 citation statements)

References 26 publications

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“…The obtained results were verified by the traction/compression and shear test. The experiments indicated that both obtained theoretical and numerical prediction values are in agreement with the results of experimental verifications confirming the validity of the methodology in providing a reliable reference for the structural design of pultruded fiber-reinforced polymer composite structures (FRP) [ 43 ].…”

Section: Introductionmentioning

confidence: 54%

Creep Response of Carbon-Fiber-Reinforced Composite Using Homogenization Method

Katouzian

Vlase

2021

Polymers

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The homogenization theory, used for the study of differential equations with periodic coefficients, with a rapid variation, is used in the paper for the analysis of the creep phenomenon of composite materials, reinforced with fibers. Generally, a polymer composite having a matrix with a viscoelastic response manifests a creep behavior. A good knowledge of mechanical constants allows us to predict the time response under the action of a load, which is important in engineering. The homogenization method is used to determine the engineering constants for a composite reinforced with carbon fibers. The method is applied for the particular case of fiber-reinforced unidirectional composites to obtain the equations that finally offer the required values. The epoxy matrix Fibredux 6376C is reinforced with carbon fibers T800 and the thermoplastic specimens made by APC2 material is reinforced with carbon fibers of the type IM6. The experimental results give a good concordance with the theoretical predictions.

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Section: Introductionmentioning

confidence: 54%

Creep Response of Carbon-Fiber-Reinforced Composite Using Homogenization Method

Katouzian

Vlase

2021

Polymers

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“…The combination of mesoscale computational homogenization triggered by the physically based model and uncoupled phenomenological model is promising to predict the ductile fracture of HSS from only the uniaxial stress–strain relationship 32–34 . The mesoscale computational homogenization method could be used to identify the fracture strain at different stress status for the calibration of the parameters of the uncoupled phenomenological model.…”

Section: Introductionmentioning

confidence: 99%

Ductile fracture locus identification using mesoscale critical equivalent plastic strain

Xin

Veljković

Correia

et al. 2021

Fatigue Fract Eng Mat Struct

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The ductile performance of high strength steel (HSS) from different steel grades, producers, manufacturing processes varies a lot. It is also difficult to conduct all kinds of reliable experiments to generate different stress status through different initial specimen geometries or by applying different load combinations in the civil engineering sector. One of the common issues for HSS structures is to identify the parameters of the ductile fracture model conveniently from the uniaxial stress–strain relationship obtained from common coupon specimens. An attempt is made in this paper to use the proposed mesoscale critical equivalent plastic strain (MCEPS) to calibrate the fracture locus of the uncoupled phenomenological model based only on the engineering stress–strain relationship. The proposed method is successfully validated by the Sandia fracture challenge in 2014.

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“…Although material testing is usually the most reliable approach to obtain credible data for design, it is costly, time-consuming, and thus impractical and very limited in its applicability for structural design purposes. For these reasons, the micromechanics approach, the technique used to obtain values of composite materials, is often adopted, whereby relatively accurate homogenization models are used to predict the equivalent properties of laminated composites [ 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…The prediction of ply properties by micromechanics is well-defined, and the engineering constants of each layer can be computed from existing micromechanics models, such as rule of mixtures (LM), improved rule of mixtures (IL), and periodic microstructure (PM), whereby each layer is modeled as a homogeneous, linearly elastic, and generally orthotropic material [ 21 , 22 , 23 ]. Based on ply properties and lay-up, the apparent stiffnesses of the face laminate can be predicted by classical lamination theory (CLT) [ 24 , 25 ], and the micromechanical solution is also used for the evaluation of equivalent strength parameters of the laminates of FRP structures [ 18 , 26 ]. For the determination of strength parameters, micromechanics based on both analytical (linear model, improved fiber buckling method, fracture mechanics, strain amplification method, etc.)…”

Section: Introductionmentioning

confidence: 99%

Comparison of Material Properties of Multilayered Laminates Determined by Testing and Micromechanics

2021

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This paper presents an experimental material campaign focusing on fiber-reinforced polymers (FRP) to be applied in a novel bridge deck panel. Laminas based on most commonly used fibers, i.e., glass, carbon, basalt and aramid, were prepared and studied in tension, shear and compression. In the subsequent test stages, different fabric reinforcements (uni- and bi-directional fabrics, woven fabrics, CSM layers) were considered for glass laminas only, and finally, a resultant laminate was designed and tested. Such an approach gives a great opportunity to create “tailor-made” laminates, as required in FRP bridge deck panels. Simultaneously with the laboratory tests, analytical calculations were performed using a few micromechanical models that aimed to determine engineering constants and strength parameters. Then, the results obtained from material testing and analytical calculations were compared, and conclusions on the compliance were drawn. Based on this validation, further analytical calculations may replace time-consuming laboratory tests and facilitate FRP deck design.

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Mechanical characterization of a unidirectional pultruded composite lamina using micromechanics and numerical homogenization

Cited by 22 publications

References 26 publications

Creep Response of Carbon-Fiber-Reinforced Composite Using Homogenization Method

Creep Response of Carbon-Fiber-Reinforced Composite Using Homogenization Method

Ductile fracture locus identification using mesoscale critical equivalent plastic strain

Comparison of Material Properties of Multilayered Laminates Determined by Testing and Micromechanics

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