| Titre : |
Numerical investigations of fiber orientation models for injection molded long fiber composites |
| Type de document : |
texte imprimé |
| Auteurs : |
Huan-Chang Tseng, Auteur ; R.-Y. Chang, Auteur ; C.-H. Hsu, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 543-552 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Composites à fibres -- Moulage par injection
Composites à fibres longues
Distribution et orientation des fibres
Modèles numériques
Prévision, Théorie de la
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Understanding the effect of fiber orientation on mechanical properties is a primary consideration for long fiber-reinforced thermoplastics in automotive applications. In injection-molded parts, the classical Folgar-Tucker model has been used to predict the shell-core structure of short fiber orientation patterns. However, this model results in a thinner core region for long fiber composites. Recently, the RSC (Reduced Strain Closure), ARD (Anisotropic Rotary Diffusion), and iARD-RPR (improved ARD and Retarding Principal Rate) models are potential models developed in relation to suspension rheology. In addition to improving the inaccurate predictions, a so-called inlet condition of fiber orientation set at the gate is examined in the RSC. In this approach, a significant requirement is to numerically investigate the nature of the shell-core structure, while validating a predictive difference between the orientation models via related experimental data. Dramatic changes in the orientation distribution at various filling times and mold temperatures are discussed herein. |
| Note de contenu : |
- THEORETICAL BACKGROUND : Folgar-Tucker isotropic rotary diffusion model - RSC model and ARD-RSC model - iART-RPR model
- RESULTS AND DISCUSSION : Folgar-Tucker model for the shell-core structure in a center-gated disc - RSC model associated with the inlet condition to determine the broader core - Validation of Folgar-Tucker, ARD-RSC and iARD-RPR models with experimental data of long fiber orientation - Predictive results for significant influence of filling time and mold temperature on core width |
| DOI : |
10.3139/217.3550 |
| En ligne : |
https://www.degruyter.com/document/doi/10.3139/217.3550/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30894 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIII, N° 4 (08/2018) . - p. 543-552
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Numerical investigations of fiber orientation models for injection molded long fiber composites in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIII, N° 4 (08/2018)
