Evaluation of effective material properties of randomly distributed short cylindrical fiber composites using a numerical homogenization technique

Berger, Harald; Kari, Sreedhar; Gabbert, Ulrich; Ramos, Reinaldo Rodríguez; Castillero, Julián Bravo; Díaz, Raúl Guinovart

doi:10.2140/jomms.2007.2.1561

Cited by 34 publications

(10 citation statements)

References 18 publications

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“…Similarly, another FE model was developed for characterizing the effective variations in the poling characteristics of the piezocomposite [22,23]. Berger et al [24] developed a numerical homogenization technique using a unit-cell-based approach in connection with FE method to predict the effective properties of randomly distributed short fiber composites.…”

Section: Fiber (Tlz)mentioning

confidence: 99%

Thermo-electro-mechanical response of 1–3–2 piezoelectric composites: effect of fiber orientations

Sakthivel

Arockiarajan

2012

Acta Mech

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A micromechanics-based analytical model is developed to evaluate the performance of 1-3-2 piezoelectric composite where both matrix and fiber materials are piezoelectrically active. A parametric study is conducted to investigate the effects of variations in the poling characteristics of the fiber phase on the overall thermo-electro-mechanical behavior of a 1-3-2 piezocomposite. The performance of the 1-3-2 composite as a transducer for underwater and biomedical imaging applications is analyzed. The proposed model is capable of predicting the effective properties of the composite subjected to thermo-electro-mechanical loading conditions. The predicted variations in the effective elastic, piezoelectric and dielectric material constants with fiber volume fraction are nonlinear in nature. It is observed that the influence of thermal effects on effective properties of the composite also induces polarization in the composite. The analytical results show that an appropriate selection of the poling characteristics of the individual fiber and matrix phases could lead to the development of a piezocomposite with significant effective properties.

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Section: Fiber (Tlz)mentioning

confidence: 99%

Thermo-electro-mechanical response of 1–3–2 piezoelectric composites: effect of fiber orientations

Sakthivel

Arockiarajan

2012

Acta Mech

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“…So far, the influence of modeling aspects has been investigated in recently published publications: Wang and Smith, for example, use a parameter study of a unit cell to determine the influence of fiber volume fraction, aspect ratio and distance between the fibers on the effective composite properties [11]. The influence of fiber orientation and fiber volume fraction is investigated in [12,13]. Furthermore, Chen et al investigates the composite properties with randomly oriented fibers in all spatial directions in [14,15].…”

Section: Introductionmentioning

confidence: 99%

RVE modelling of short fiber reinforced thermoplastics with discrete fiber orientation and fiber length distribution

Breuer

Stommel

2019

SN Appl. Sci.

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This study presents an analysis of modelling aspects on the effective composite properties of short glass fiber reinforced thermoplastics using representative volume elements (RVE). Although, many investigations were published showing effects of different modelling parameters of RVEs, we further elaborate in this contribution the parameters: influence of fiber packing, fiber shape, bonding of the fibers to the matrix, fiber length distribution and fiber orientation. The knowledge of these influences is used to determine the extent to which the increased modelling accuracy and thus the computational effort leads to an improved RVE's forecast quality. This objective is achieved by creating and comparing different RVE models of a PBT-GF20 composite. The information required for the RVE models is obtained by experimental characterization of the PBT-GF20 and the PBT matrix material. It can be concluded based on the results of the numerical investigations in conjunction with the experimental tests of the composite that fiber packing, fiber length distribution, fiber orientation and fiber geometry are essential for a precise determination of the effective composite properties.

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“…Several works were conducted to highlight the validity domains of these mean-field micromechanical models (by comparing them to full-field approaches) when predicting the elastic properties of various RVEs with different microstructures. Most of these studies have been focused on spherical particles reinforced composites [19,20,21,22,24,25], aligned fibers reinforced composites [26], randomly oriented fiber reinforced composites [30,31,32,33,34] or microstructures with aligned or randomly oriented clay platelets [35,36,37,38].…”

Section: Introductionmentioning

confidence: 99%

On the choice of homogenization method to achieve effective mechanical properties of composites reinforced by ellipsoidal and spherical particles

Hounkpati,

Salnikov,

Vivet

et al. 2017

Preprint

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In this paper, several rigorous numerical simulations were conducted to examine the relevance of mean-field micromechanical models compared to the Fast Fourier Transform full-field computation by considering spherical or ellipsoidal inclusions. To be more general, the numerical study was extended to a mixture of different kind of microstructures consisting of spheroidal shapes within the same RVE. Although the Fast Fourier Transform full field calculation is sensitive to high contrasts, calculation time, for a combination of complex microstructures, remains reasonable compared with those obtained with mean-field micromechanical models. Moreover, for low volume fractions of inclusions, the results of the mean-field approximations and those of the Fast Fourier Transform-based (FFTb) full-field computation are very close, whatever the inclusions morphology is. For RVEs consisting of ellipsoidal or a mixture of ellipsoidal and spherical inclusions, when the inclusions volume fraction becomes higher, one observes that Lielens' model and the FFTb fullfield computation give similar estimates. The accuracy of the computational methods depends on the shape of the inclusions' and their volume fraction.

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Evaluation of effective material properties of randomly distributed short cylindrical fiber composites using a numerical homogenization technique

Cited by 34 publications

References 18 publications

Thermo-electro-mechanical response of 1–3–2 piezoelectric composites: effect of fiber orientations

Thermo-electro-mechanical response of 1–3–2 piezoelectric composites: effect of fiber orientations

RVE modelling of short fiber reinforced thermoplastics with discrete fiber orientation and fiber length distribution

On the choice of homogenization method to achieve effective mechanical properties of composites reinforced by ellipsoidal and spherical particles

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