| Titre : |
Simulation-based development of 3D woven fabrics for high-tech applications |
| Type de document : |
texte imprimé |
| Auteurs : |
Thi Anh My Huynh, Auteur ; Minh Quang Pham, Auteur ; Gerald Hoffmann, Auteur ; Thomas Gereke, Auteur ; Chokri Cherif, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
p. 38-41 |
| Note générale : |
Bibliogr. |
| Langues : |
Multilingue (mul) |
| Catégories : |
Simulation par ordinateur
Structures tridimensionnelles
Textiles et tissus à usages techniques
Tissage tridimensionnel
Tissés
|
| Index. décimale : |
677 Textiles |
| Résumé : |
Numerical simulation helps in the analysis of textile structures. It also supports the technical development of 3D preforms that are cut-free and woven to final contour, which is the prerequisite for a one-step manufacturing process (direct pre-forming). The simulation-based development process not only reduces trial-and-error, but also predicts the limits of current technology. The fiexibility of the machine technology enables the production of multilayer and highly anisotropic preforms for high-performance FRP components. It has been shown that the production of certain 3D fabrics with fewer plies and a single weave works well. When producing 3D fabrics with more than 4 plies, the yarn-yarn friction on the warp yarn system increases strongly. At the same time, the shed cannot open completely. In order to keep the frictional forces low even with multilayer 3D fabrics, further investigations are required. For low-damage processing, a new technique with twin flat-steel healds is currently in the research phase. This technique is based on the modifica¬tion of the heald system, which makes it possible to position the warp threads on top of each other. The yarn-yarn friction during weaving is thus reduced and damage to the threads minimized. |
| Note de contenu : |
- Modelling of the weaving process
- Fig. 1 : Filament cross-section and computation time at different number of modelled filaments in the yarn, cross-section in the models and in reality
- Fig. 2 : Example of an FEM weaving process simulation with representation of the boundary conditions
- Fig. 3 : Warp cut of the simulated 3D fabrics with different heald distances
- Fig. 4 : Force measurements in the process simulation for 3 variants of the heald spacing
- Fig. 5 : exemplary representation of a 3D fabric as a) wave repeat, b) simulation model and c) experment
- Fig. 6 : Optical comparison of simulated and manufactured layer-to-layer fabrics in warp and weft direction |
| En ligne : |
https://drive.google.com/file/d/1cRZGsGD_OBA3RzYk4Sa6RfCCt1DxXC7m/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40140 |
in TECHNICAL TEXTILES > Vol. 66, N° 4 (2023) . - p. 38-41
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Simulation-based development of 3D woven fabrics for high-tech applications in TECHNICAL TEXTILES, Vol. 66, N° 4 (2023)
