Manufacturing and internal geometry of textiles

Lomov, Stepan V.; Verpoest, Ignace

doi:10.1533/9781845690823.1

Cited by 27 publications

(25 citation statements)

References 21 publications

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“…RTM processes are automated and ensure high quality, reproducibility, geometrical flexibility and low cycle times [5], while resin systems with short curing times can significantly reduce production times. Important parameters characterizing yarn alignment are the braiding angle and the spacing between the yarns [6]. The prediction of these parameters is not straight forward due to the high number of process parameters and the arbitrary geometric shape of the braided part.…”

Section: Motivationmentioning

confidence: 99%

Finite element simulation of the braiding process for arbitrary mandrel shapes

Hans

Cichosz

Brand

et al. 2015

Composites Part A: Applied Science and Manufacturing

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Section: Motivationmentioning

confidence: 99%

Finite element simulation of the braiding process for arbitrary mandrel shapes

Hans

Cichosz

Brand

et al. 2015

Composites Part A: Applied Science and Manufacturing

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“…Note that the yarn data describe the yarn per se -some of the specified parameters can be modified after the fabric geometry model has been built, for example, the yarn cross-section dimensions in the fabric can be different because of the yarn compression. The reader is referred to [4,[14][15][16][17][18] for details of use of the yarn data in the fabric geometry and deformation models.…”

Section: Data Exchange and Data Formatsmentioning

confidence: 99%

“…The Weave data section contains a weave code matrix W, which allows coding of 2D and 3D weaves (the detailed explanation of the weave codes can be found in [12,[14][15][16]. Finally, the Modelling Parameters data section holds information on the computational parameters used for building the geometrical model.…”

Section: Data Exchange and Data Formatsmentioning

confidence: 99%

From a Virtual Textile to a Virtual Woven Composite

Lomov¹

2015

Woven Composites

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The future of fibre-reinforced composites, in general, and textile composites in particular, seems bright. Four industrial branches -aeronautic, automotive, sporting goods and wind energy -are now major users of composites, and their demands will shape composite material science for decades ahead.With the Airbus-380, Airbus-350 and Boeing-787 flying, and being produced by the hundreds, the aeronautics industry has a high demand for further materials, manufacturing and quality control improvement. All leading car manufacturers have developed concept solutions of composite cars, with several of them already on the roads or expected there shortly. The specific price requirements and recyclability regulations of the car industry shape the research directions in somewhat different ways than in aeronautics. The demands of wind energy industry for composites are extreme, both in production volumes and in material performance. Turbine blades of 90 metres, composed fully of composite materials need to run for 25 years in extreme, off-shore conditions at the same time, meeting the competitive cost limits of the energy market. And finally, the sporting goods industry has become almost a "traditional" user of composites, both because they allow for weight reduction and hence reduce the energy consumption by the athletes (in cycling . . . ) and they improve the control and efficiency (in skiing, tennis . . . ). Sporting goods have always been, and will remain, an ideal testing ground for new composites concepts, because the consumer demands them and the developers are not hindered by too many regulations. 109Woven Composites Downloaded from www.worldscientific.com by UNIVERSITY OF BIRMINGHAM on 08/21/15. For personal use only.

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“…Dans TexGen, les trajectoires des fils sont définies par des splines qui passent par des groupes de noeuds (Figure 4-1 Dans le modèle de type Peirce [9], [120], [121], deux hypothèses sont prises en compte : la première hypothèse est que la section des fils des trames est supposée avoir une certaine forme (circulaire, elliptique,…) dans les zones d'entrecroisement avec les fils de chaîne ; la deuxième hypothèse est que les fils de chaîne soient droits hors des zones de contact avec les fils de trame (Figure 4-3). La résistance en flexion des fils est négligée dans ce modèle.…”

Section: Modélisation Géométrique Des Structures Tisséesunclassified

“…Cependant, cette méthode utilise une procédure où l'architecture est projetée sur un seul plan et n'est, par conséquent, pas applicable pour les architectures qui ont des fils avec une ondulation en dehors du plan, comme pour les tissus interlock 3D.L'outil logiciel WiseTex développé par Lomov et al permet d'associer les propriétés des fibres à des modèles analytiques. Dans le modèle élastique[120], les données d'entrée pour construire un tissu sont l'armure, la densité des fils (chaîne et trame), et les propriétés des fils (géométrie, comportement en compression, flexion, et traction du fil; ainsi que la teneur en fibre dans le fil). Le préprocesseur de WiseTex utilise le principe de minimisation de l'énergie de flexion pour calculer la trajectoire des mèches et la forme des sections transverse[32],[99].…”

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Numerical Modelling of the Weaving Process for Textile Composite

Vilfayeau

David

Boussu

et al. 2013

KEM

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Due to advancements made in 3D weaving process [1] and, in order to develop 3D textile structure as reinforcement of composite material for aeronautic application, a good prediction of the geometry and the mechanical properties of the 3D woven unit cell is required. Due to the complexity of these textile architectures, realistic geometric representations [2] of fabrics are often difficult to obtain especially for 3D woven fabrics, but these descriptions are necessary to define meshes for finite element computation [3]. At present, existing tools which model and define, early at a mesoscopic scale [4], the architecture of 3D fabrics don’t take into account the influence of the manufacturing process on the shape modification of the textile structure. Some numerical model exists for the braiding process [5] and the knitting process [6], but not yet for the weaving process. During the manufacturing process, fibres are subjected to significant deformations due to loads from the component of the loom or from the friction with the others fibres. These significant deformations lead to mechanical strength losses of the fabric. A numerical model of the different steps of the weaving process could predict these significant deformations and their influence on the geometry of the textile architecture. Thus, the objective of the NUMTISS project is to develop a numerical model of the deformation of the yarn during the weaving process. For the numerical modelling of the weaving process developed in finite element method, we considered all loom elements like rigid solid, and we will make the assumption that yarns are transverse isotropic elastic materials. Simulations of the process for a plain weave, a twill 2-2 and a satin 8 fabric have already been performed, as well as the simulation of orthogonal warp interlock structures. Then, to understand the kinematic motions of weaving process, the tracking of some strategic elements on the industrial weaving loom (reed, heddles, rapier,..) have been carried out. The tracking obtained from the video of the high speed camera will help us to define the numerical model of the weaving kinematic closer to reality. Correlations between numerical results and specific structures in glass fibres produced on the loom will be presented. The influence of each step of the manufacturing process on the characteristics of the textile structure could be analyzed [1]X. Chen, L. W. Taylor, L. J.Tsai. ”An overview on fabrication of three-dimensional woven textile preforms for composites”. Textile Research Journal, 2011, 81(9) 932–944 [2] SV Lomov, G Perie, DS Ivanov, I Verpoest and D Marsal. “Modeling three-dimensional fabrics and three-dimensional reinforced composites: challenges and solutions”. Textile Research Journal, 2011, 81(1) 28–41 [3] E. De Luycker, F. Morestin, P. Boisse, D. Marsal. « Simulation of 3D interlock composite performing”. Composite Structures, Volume 88, Issue 4, May 2009, Pages 615-623. [4] M. Ansar, W. Xinwei, Z. Chouwei. “Modeling strategies of 3D woven composites: A review”. Composite Structures 93 (2011) 1947–1963. [5] A. K. Pickett, J. Sirtautas, et A. Erber. « Braiding simulation and prediction of mechanical properties”. Applied Composite Materials, 2009. [6] M. Duhovic, D. Bhattacharyya. “Simulating the deformation mechanisms of knitted fabric composites”. Composites Part A : Applied Science and Manufacturing, 2006.

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Manufacturing and internal geometry of textiles

Cited by 27 publications

References 21 publications

Finite element simulation of the braiding process for arbitrary mandrel shapes

Finite element simulation of the braiding process for arbitrary mandrel shapes

From a Virtual Textile to a Virtual Woven Composite

Numerical Modelling of the Weaving Process for Textile Composite

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