| Titre : |
Flow-fiber coupled viscosity in injection molding simulations of short fiber reinforced thermoplastics |
| Type de document : |
texte imprimé |
| Auteurs : |
Tianyi Li, Auteur ; J. F. Luyé, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 158-171 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Composites à fibres courtes
Distribution et orientation des fibres
Rhéologie
Simulation par ordinateur
Viscosité
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The main objective of this paper is to numerically investigate the use of fiber-dependent viscosity models in injection molding simulations of short fiber reinforced thermoplastics with latest commercial software. We propose to use the homogenization-based anisotropic rheological model to take into account flow-fiber coupling effects. The 4th-order viscosity tensor is approximated by an optimal scalar model and then implemented in the Moldflow Insight API framework. Numerical simulations are performed for a test-case rectangular plate with three fiber orientation models. The resulting coupled flow kinematics and fiber evolutions are then compared to the standard uncoupled simulations. Interpretations are given based on detailed post-processing of the field results. Certain deformation conditions are expected to be better taken into account, which may also in return lead to an improved fiber orientation prediction. Preliminary confrontation between flow-fiber coupled simulations and existing experimental data is then presented at the end of the paper. |
| Note de contenu : |
- FLOW-FIBER COUPLED VISCOSITY MODELS : Anisotropic fiber-induced rheological equations - Optimal scalar approximation of the 4th-order viscosity tensor - Implementation in the moldflow insight API framework
- TEST-CASE SIMULATIONS ON A RECTAGULAR PLATE : Fiber orientations predicted by uncoupled simulation - Coupled simulations using the folgar-tucker model - Coupled simulations using the MRD model - Coupled simulations with the RSC model
- PRELIMINARY CONFRONTATION WITH EXPERIMENTAL DATA
- CONCLUSIONS AND FUTURE WORK |
| DOI : |
10.3139/217.3706 |
| En ligne : |
https://www.degruyter.com/document/doi/10.3139/217.3706/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32392 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 2 (05/2019) . - p. 158-171
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