Experimental characterisation and modelling of polyethylene terephthalate preform for injection stretch blow moulding

被引：0

作者：

Battini D. ^{[1
]}

Avanzini A. ^{[1
]}

Antonini M. ^{[2
]}

Fausti D. ^{[2
]}

Mor M. ^{[2
]}

Vertuan A. ^{[2
]}

Chiesa F. ^{[3
]}

Grazioli M. ^{[3
]}

Donzella G. ^{[1
]}

机构：

[1] Department of Mechanical and Industrial Engineering, University of Brescia, via Branze, 38, Brescia (BS

[2] Polibrixia SRL, via Branze, 45, Brescia (BS

[3] SMILAB SRL, via Vittorio Veneto, 4, San Pellegrino Terme (BG)

来源：

International Journal of Materials and Product Technology | 2020年 / 60卷 / 01期

关键词：

Bottle; Experimental characterisation; FEM; Finite element method; Injection stretch blow moulding; ISBM; PET; Polyethylene terephthalate; Preform;

D O I：

10.1504/IJMPT.2020.108493

中图分类号：

学科分类号：

摘要：

Polyethylene terephthalate (PET) is a widely used polymer in the production of bottles by injection stretch blow moulding (ISBM). In this work, we present a characterisation method to identify material properties directly from a preform, considering temperature and stress-relaxation effects related to its viscoelastic response. A customised oven and gripping system were designed to perform uniaxial tests in a proper temperature range on tubular specimens obtained from preforms. A visco-hyperelastic model is then proposed: a Marlow-type strain energy function coupled with a Prony series and William-Landel-Ferry equation to include time and temperature dependency. Finally, a case study of ISBM process is implemented in a finite element code considering this constitutive model. Strain maps and predicted thickness of the bottle wall were evaluated as process quality indicators. Simulation results showed good agreement with measurements on the real processed bottle, confirming the usefulness of the approach for product or process parameters optimisation. © 2020 Inderscience Enterprises Ltd.

引用

页码：18 / 39

页数：21

共 39 条

[1]

Adams A.M., Buckley C.P., Jones D.P., Biaxial hot drawing of poly(ethylene terephthalate): Measurements and modelling of strain-stiffening, Polymer (Guildf), 41, pp. 771-786, (2000)

[2]

Avanzini A., Gallina D., Effect of cyclic strain on the mechanical behavior of a thermoplastic polyurethane, J. Eng. Mater. Technol., 133, (2011)

[3]

Awaja F., Pavel D., Injection stretch blow moulding process of reactive extruded recycled PET and virgin PET blends, Eur. Polym. J., 41, pp. 2614-2634, (2005)

[4]

Battini D., Donzella G., Avanzini A., Zenoni A., Ferrari M., Donzella A., Pandini S., Bignotti F., Andrighetto A., Monetti A., Experimental testing and numerical simulations for life prediction of gate valve O-rings exposed to mixed neutron and gamma fields, Mater. Des., 156, pp. 514-527, (2018)

[5]

Billon N., Picard M., Gorlier E., Stretch blow moulding of PET

[6]

structure development and constitutive model, Int. J. Mater. Form., 7, pp. 369-378, (2014)

[7]

Boyce M.C., Socrate S., Llana P.G., Constitutive model for the finite deformation stress-strain behavior of poly(ethylene terephthalate) above the glass transition, Polymer (Guildf), 41, pp. 2183-2201, (2000)

[8]

Buckley C.P., Glass-rubber constitutive model for amorphous polymers near the glass transition, Polymer (Guildf), 36, pp. 3301-3312, (1995)

[9]

Chevalier L., Luo Y.M., Monteiro E., Menary G.H., On visco-elastic modelling of polyethylene terephthalate behaviour during multiaxial elongations slightly over the glass transition temperature, Mech. Mater., 52, pp. 103-116, (2012)

[10]

Chung K., Finite element simulation of pet stretch/blowmolding process, J. Mater. Shap. Technol., 7, pp. 229-239, (1989)

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