Experimental study and numerical simulation of the injection stretch/blow molding process

Abstract : The injection stretch/blow molding process of PET bottles is a complex process, in which the performance of the bottles depends on various processing parameters. Experimental work has been conducted on a properly instrumented stretch/blow molding machine in order to characterize these processing parameters. The objective being a better understanding of the pressure evolution, preform free inflation has been processed and compared with a simple thermodynamic model. In addition, a numerical model for the thermomechanical simulation of the stretch/blow molding process has been developed. At each time step, mechanical and temperature balance equations are solved separately on the current deformed configuration. Then, the geometry is updated. The dynamic equilibrium and the Oldroyd B constitutive equations are solved separately using an iterative procedure based on a fixed-point method. The heat transfer equation is discretized using the Galerkin method and approximated by a Crank-Nicholson's scheme over the time increment. Successful free blowing simulations as well as stretch/blow molding simulations have been performed and compared with experiments.
Type de document :
Article dans une revue
Polymer Engineering and Science, Wiley-Blackwell, 1998, 38 (9), p.1399-1412. 〈10.1002/pen.10310〉
Liste complète des métadonnées

https://hal-mines-paristech.archives-ouvertes.fr/hal-00617038
Contributeur : Magalie Prudon <>
Soumis le : jeudi 25 août 2011 - 15:52:21
Dernière modification le : vendredi 8 juin 2018 - 09:40:15

Lien texte intégral

Identifiants

Collections

Citation

Fabrice M. Schmidt, Jean-François Agassant, Michel Bellet. Experimental study and numerical simulation of the injection stretch/blow molding process. Polymer Engineering and Science, Wiley-Blackwell, 1998, 38 (9), p.1399-1412. 〈10.1002/pen.10310〉. 〈hal-00617038〉

Partager

Métriques

Consultations de la notice

212