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Titolo:
3-D geometric modeling of a draped woven fabric
Autore:
Hofstee, J; van Keulen, F;
Indirizzi:
DLS German Aerosp Ctr, Inst Struct & Designs, D-70503 Stuttgart, Germany DLS German Aerosp Ctr Stuttgart Germany D-70503 70503 Stuttgart, Germany Delft Univ Technol, Mech Engn Lab, NL-2600 GA Delft, Netherlands Delft Univ Technol Delft Netherlands NL-2600 GA 00 GA Delft, Netherlands
Titolo Testata:
COMPOSITE STRUCTURES
fascicolo: 2-3, volume: 54, anno: 2001,
pagine: 179 - 195
SICI:
0263-8223(200111/12)54:2-3<179:3GMOAD>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELASTIC STIFFNESS ANALYSIS; PLAIN WEAVE COMPOSITES; TEXTILE COMPOSITES; STRESS-ANALYSIS; PREDICTION; PREFORMS;
Keywords:
3-D geometry model; woven fabric; draping; fibre reorientations; plain-weave;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Hofstee, J EDS, EADS Airbus, Kreetslag 10, D-21129 Hamburg, Germany EDS Kreetslag 10 Hamburg Germany D-21129 1129 Hamburg, Germany
Citazione:
J. Hofstee e F. van Keulen, "3-D geometric modeling of a draped woven fabric", COMP STRUCT, 54(2-3), 2001, pp. 179-195

Abstract

One of the components required for design and optimisation of fabric reinforced products is a realistic and accurate 3-D geometry model for a repeating element of the reinforcement. Such a model, which reflects the deformations that result from weaving the fibre bundles and forming (draping) the woven fabric over a product mould, is proposed in the present paper. A fibre bundle architecture, which exhibits undulation and variable cross-section dimensions, is introduced to this effect. Every bundle is described by its in-plane centreline path, its double curved horizontal midplane and the thickness distribution of the cross-sections. These parameters are, in turn, defined by invariant shape functions and variable fibre bundle dimensions. The selected geometry description enables straightforward determination of individual fibre paths. In order to verify the model experimentally, cross-sections are cut out from undeformed laminates with plain-weave reinforcements, and laminates of which the plain-weaves have been subjected to stretching or shear deformations during draping. The laminate cross-sections are made along and perpendicular to the mean directions of the impregnated fibre bundles (yarns). All yams exhibit out-of-plane undulation and curvature and twist of the midplane. Correlation between experiment and the proposed modeling scheme is good. Draping results in significant fibre reorientations and variations between the individual fibre paths, which are not reflected byexisting modeling schemes. These geometry deviations may significantly affect the stress distribution, and should be taken into account in order to predict material properties accurately. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 26/09/20 alle ore 08:08:10