Modeling and simulation of stretch blow molding of polyethylene terephthalate

DOI	Resolve DOI: https://doi.org/10.1002/pen.20142
Author	Search for: Pham, X.-T.; Search for: Thibault, F.; Search for: Lim, L-T.
Format	Text
Type	Article
Journal title	Polymer Engineering and Science
ISSN	0032-3888 1548-2634
Volume	44
Issue	8
Pages	1460–1472
Abstract	When polyethylene terephthalate (PET) is stretched, it exhibits strain-hardening properties, which are temperature and strain-rate dependent. In this paper, two grades of PET are experimentally characterized using biaxial tests. A visco-hyperelastic model is used to describe the stretching behavior for the polymer. A biaxial characterization method is employed to determine the model parameters using a robust nonlinear curve-fitting program. This model can represent adequately well the stretching behavior of PET. Based on this model, the membrane finite element formulation is developed to simulate the stretch blow molding process. Two bottles of different designs, produced based on the single-stage injection blow molding process, are used to validate the model. Good agreement with the bottle thickness profile is observed. Polym. Eng. Sci. 44:1460–1472, 2004.
Publication date	2004-08
Publisher	Wiley
Language	English
Peer reviewed	Yes
NPARC number	23001675
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Record identifier	6ce5b2a0-db7e-4a10-9bcd-9f6937ab817b
Record created	2017-03-16
Record modified	2017-03-16