Numerical Evaluation of Effective Elastic Properties of Graphite Fibre Tow Impregnated by Polymer Matrix

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F01%3A01040485" target="_blank" >RIV/68407700:21110/01:01040485 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Evaluation of Effective Elastic Properties of Graphite Fibre Tow Impregnated by Polymer Matrix

Popis výsledku v původním jazyce

Homogenized elastic material properties are found for a fibrous graphite-epoxy composite system with fibers randomly distributed within a transverse plane section of the composite aggregate using the finite element method. To enhance efficiency of the numerical analysis the real microstructure is replaced by a material representative volume element, represented here by a periodic unit cell consisting of a small number of particles, which statistically resembles the actual composite. Such a unit cell isderived from a simple optimization procedure formulated in terms of various statistical descriptors characterizing the microstructure of the random medium. In the present approach the two-point probability and the second order intensity functions are employed. The upper bound on the macroscopic elastic stiffnesses then follows from the principle of minimum potential energy. The Finite Element Method (FEM) is called to carry out the numerical analysis.

Název v anglickém jazyce

Numerical Evaluation of Effective Elastic Properties of Graphite Fibre Tow Impregnated by Polymer Matrix

Popis výsledku anglicky

Homogenized elastic material properties are found for a fibrous graphite-epoxy composite system with fibers randomly distributed within a transverse plane section of the composite aggregate using the finite element method. To enhance efficiency of the numerical analysis the real microstructure is replaced by a material representative volume element, represented here by a periodic unit cell consisting of a small number of particles, which statistically resembles the actual composite. Such a unit cell isderived from a simple optimization procedure formulated in terms of various statistical descriptors characterizing the microstructure of the random medium. In the present approach the two-point probability and the second order intensity functions are employed. The upper bound on the macroscopic elastic stiffnesses then follows from the principle of minimum potential energy. The Finite Element Method (FEM) is called to carry out the numerical analysis.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA103%2F97%2FP040" target="_blank" >GA103/97/P040: Mikromechanická analýza kvazikřehkých materiálů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the Mechanics and Physics of Solids

ISSN

0022-5096

e-ISSN

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Svazek periodika

49

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

22

Strana od-do

69-90

Kód UT WoS článku

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EID výsledku v databázi Scopus

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