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Measurement and numerical simulation of void and warpage in glass fiber reinforced molded chunky parts / Stefan Kleindel in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 1 (03/2015)

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inINTERNATIONAL POLYMER PROCESSING > Vol. XXX, N° 1 (03/2015) . - p. 100-112

Titre :	Measurement and numerical simulation of void and warpage in glass fiber reinforced molded chunky parts
Type de document :	texte imprimé
Auteurs :	Stefan Kleindel, Auteur ; D. Salaberger, Auteur ; R. Eder, Auteur ; H. Schretter, Auteur ; C. Hochenauer, Auteur
Année de publication :	2015
Article en page(s) :	p. 100-112
Note générale :	Bibliogr.
Langues :	Anglais (eng)
Catégories :	Composites à fibres de verre -- Moulage par injection Déformations (mécanique) Gauchissement (matériaux) Moulage par injection -- Défauts Polyamide 6 Simulation par ordinateur
Index. décimale :	668.9 Polymères
Résumé :	The aim of this paper is to determine the reason for the large warpage of an injection molded chunky part made of glass fiber reinforced polyamide 6. State of the art commercial 3D injection molding simulation software was used to predict the warpage of the part. While the simulation predicted a product virtually free of warpage the molded parts showed a large deformation. Several molding experiments and X-ray computed tomography (?CT) scans of the moldings have been performed to figure out the reason for this. The ?CT scans revealed voids in the thick walls of the part. It was found that these defects were the main cause of the unreliable simulation results. Therefore it is concluded that voids can have a major influence on the reliability of numerical warpage predictions. This paper shows a simplified method to determine the zones were voids will appear and shows the comparison with ?CT-data.
Note de contenu :	- PROBLEM DESCRIPTION - MEASUREMENTS - EXPERIMENTS : Initial case - Variant - NUMERICAL ANALYSIS : Computational mesh - Material data - Fiber orientation - Warpage prediction - Process settings - Solver settings - RESULTS AND DISCUSSION : Experimental results - µCT results - Simulation results - Prediction of porous zones
DOI :	10.3139/217.2984
En ligne :	https://drive.google.com/file/d/1d_Zb9TKitwRi7zAjPmz5RFAXco_AJv4m/view?usp=drive [...]
Format de la ressource électronique :	Pdf
Permalink :	https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23427

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