Titre : |
Design methodology for parts subject to internal pressure : Mold system with rotating core improves mechanical properties |
Type de document : |
texte imprimé |
Auteurs : |
Thorsten Krumpholz, Auteur ; Philipp Land, Auteur |
Année de publication : |
2022 |
Article en page(s) : |
p. 52-55 |
Langues : |
Anglais (eng) |
Catégories : |
Composites à fibres courtes Composites à fibres de verre -- Moulage par injection Distribution et orientation des fibres Matières plastiques -- Rotomoulage Mesure Moules à noyau rotatif Moules d'injection Polypropylène Simulation par ordinateur
|
Index. décimale : |
668.4 Plastiques, vinyles |
Résumé : |
Internal pressure loads are typical for fiber-reinforced plastic components. To increase the burst strength of components, the fiber orientation can be modified in a targeted way during injection molding by means of a rotating mold core. A newly developed simulation method allows this modified fiber orientation to be taken into account at the design stage. |
Note de contenu : |
- Measurement of fiber orientation
- Stages of the simulation methodology
- Practical realization of a pressure-loaded component
- Fig. 1. The superimposition of the injection-induced axial shearing by the tangential shearing due to the rotation selectively influences the fiber orientation in the tangential direction due to the rotation
- Fig. 2. The rotation core can produce an increase in the tangential orientation component almost independent of the wall thickness (left). At correspondingly high speeds, the tangential fibers dominate the microstructure across the entire thickness (right)
- Fig. 3. The layer-by-layer assignment of the fiber orientations, with the aid of Converse and S-Life-Plastics, enables the anisotropic structural simulation of rotated components
- Fig. 4. Application of the simulation methodology allows, for the first time, the increased bursting strength due to rotation of the mold core also to be taken into account in the design of new components
- Fig. 5. This application case shows a significant reduction of the utilization ratio due to manufacturing with a rotating core |
En ligne : |
https://drive.google.com/file/d/1M6AWx7jg_NhlQV9iEZQgQp3ZD7Dqb60K/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37311 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 112, N° 2 (2022) . - p. 52-55