A four-phase confocal elliptical cylinder model for predicting the effective thermal conductivity of coated fibre composites

Jiang, Chunxiang; Chen, F.L.; Peng, Yan; Song, Fan

doi:10.1080/14786435.2010.492767

Cited by 4 publications

(4 citation statements)

References 35 publications

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“…Substituting Equations (19) and (11) into Equation 10, the radiative heat flux, q r p , on the surface at an arbitrary point is given as…”

Section: Philosophical Magazine 2035mentioning

confidence: 99%

“…The generalized self-consistent method [11][12][13][14][15][16][17][18][19][20] is a sophisticated micromechanics method, which is of mathematical rigor in its formulation and physical realism [18]. The method can provide compact formulae and reasonable results, and has been widely used to predict the mechanical [11,12,[14][15][16] and thermal [13,17,19,20] properties (pure conduction) of composite materials. However, to the best of our knowledge, the method has not been extended to predict the effective thermal conductivity of porous materials accounting for the radiative contribution in pores.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Prediction of effective stagnant thermal conductivities of porous materials at high temperature by the generalized self-consistent method

Jiang

Chen

Peng

et al. 2012

Philosophical Magazine

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This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae, and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand, or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.

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“…Substituting Equations (19) and (11) into Equation 10, the radiative heat flux, q r p , on the surface at an arbitrary point is given as…”

Section: Philosophical Magazine 2035mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Prediction of effective stagnant thermal conductivities of porous materials at high temperature by the generalized self-consistent method

Jiang

Chen

Peng

et al. 2012

Philosophical Magazine

Self Cite

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“…Analytic-numerical method [5][6][7] for predicting the thermal conductivities of composites have been discussed in many literatures. Jiang et al [8] proposed a four-phase confocal elliptical cylinder model for predicting the thermal conductivity of coated fiber reinforced composites. Sihn and Roy [9] produced and investigated both analytic and numerical models with regular and randomly distributed fibers in matrix material.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Effective Thermal Conductivities of Four-Directional Carbon/Carbon Composites by Unit Cells with Different Sizes

Sun

Shao

2021

Applied Sciences

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Two-unit cells developed to predict the effective thermal conductivities of four-directional carbon/carbon composites with the finite element method are proposed in this paper. The smaller-size unit cell is formulated from the larger-size unit cell by two 180° rotational transformations. The temperature boundary conditions corresponding to the two-unit cells are derived, and the validity is verified by the temperature and heat flux distributions at specific positions of the larger-size unit cell and the smaller-size unit cell. The thermal conductivities of the carbon fiber bundles and carbon fiber rods are measured firstly. Then, combined with the properties of the matrix, the effective thermal conductivities of the four-directional carbon/carbon composites are numerically predicted. The results in transverse direction predicted by the larger-size unit cell and the smaller-size unit cell are both higher than experimental values, which are 5.8 to 6.2% and 7.3 to 8.2%, respectively. In longitudinal direction, the calculated thermal conductivities of the larger-size unit cell and the smaller-size unit cell are 6.8% and 6.2% higher than the experimental results, respectively. In addition, carbon fiber rods with different diameters are set to clarify the influence on the effective thermal conductivities of the four-directional carbon/carbon composites.

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“…It should be noted that at present, the creation of a good competitive product, including from composite materials, is impossible without the use of computer technologies for virtual product development (or VPD technologies). Given the complexity of the task, modeling and analysis of composite structures should be carried out with the involvement of the most modern engineering analysis systems (or СAE systems) implementing the finite element method (FEM) [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Development and verification of mechanical characteristics of a composite material made of a thermoplastic matrix and short glass fibers

Isametova

Abilezova

Dishovsky

et al. 2021

EEJET

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The paper presents the results of computer modeling and prediction of the mechanical properties of composite materials with a polycarbonate matrix filled with short glass inclusions. At the micro-level, the influence of the volume of inclusions on the mechanical properties of the designed composite based on polycarbonate matrix is studied in the DIGIMAT (France) program. It was found that with a ratio of the sizes of inclusions in the range of 468÷60, the particles have a needle shape, and the material with such inclusions has a higher stress limit and elastic modulus than with a shape coefficient less than 50. The components of the fiber orientation tensor were also determined, at which the values of computer modeling are in good agreement with experimental data. The influence of the size of the finite element grid on the characteristics of the composite at the macro level was studied, and recommendations were given for choosing the size of the face of the finite element. The adequacy of computer models was confirmed by the results of field tests. The paper presents the results of testing flat samples made by injection molding technology. Mechanical tests were carried out for three variants of samples made of composite material based on a polycarbonate matrix with 10 %, 20 % and 30 % inclusions. The discrepancy between the experimental and computer results for samples with 10 %, 20 % content of short chopped fibers is explained by the influence of technological factors on the properties of the material at the macro-level. The conducted research allowed us to develop a computer modeling technique used at the stage of development of polymer composites based on thermoplastic matrices with short glass inclusions

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A four-phase confocal elliptical cylinder model for predicting the effective thermal conductivity of coated fibre composites

Cited by 4 publications

References 35 publications

Prediction of effective stagnant thermal conductivities of porous materials at high temperature by the generalized self-consistent method

Prediction of effective stagnant thermal conductivities of porous materials at high temperature by the generalized self-consistent method

Prediction of Effective Thermal Conductivities of Four-Directional Carbon/Carbon Composites by Unit Cells with Different Sizes

Development and verification of mechanical characteristics of a composite material made of a thermoplastic matrix and short glass fibers

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