In situ adjustment of a visco hyper elastic model for stretch blow molding process simulation of poly‐ethylene terephthalate bottles

In situ adjustment of a visco hyper elastic model for stretch blow molding process simulation of poly‐ethylene terephthalate bottles

Abstract Simulation of the stretch blow molding (SBM) process necessitates to develop a model able to reproduce the material behavior at high strain rate, large deformation with temperature gradient. On the other hand, both the need to understand polyethylene terephthalate (PET) material characteris...

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Bibliographic Details
Published in:Polymer engineering and science Vol. 63; no. 9; pp. 3066 - 3082
Main Authors: Luo, Yun-Mei, Yakam, Guy Tantchou, Chariot, Remi, Chevalier, Luc, Savajano, Romain
Format: Journal Article
Language:English
Published: Newtown Society of Plastics Engineers, Inc 01-09-2023
Blackwell Publishing Ltd
Wiley-Blackwell
Subjects:
Blow molding
Blowing
Bottles
Composition
Container industry
Engineering Sciences
Ethylene
High strain rate
Mechanical properties
Molding
Plastic bottles
Plastics
Polyethylene terephthalate
Production processes
France
PET bottle
Stretch Blow Molding (SBM) Process
numerical simulation
identification procedure
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Summary:Abstract Simulation of the stretch blow molding (SBM) process necessitates to develop a model able to reproduce the material behavior at high strain rate, large deformation with temperature gradient. On the other hand, both the need to understand polyethylene terephthalate (PET) material characteristics and the final bottle performance requirements continue to get higher. That necessitates a regular update of the identification of the model. Bottle producers are interested by managing this identification without a specific complex apparatus not available in an industrial context. The work presented here describes an in‐situ adjustment process for upgrading all parameters of a visco‐hyperelastic (VHE) model from a small number of blowing tests that do not necessitate complex equipment. The accuracy of the adjustment process is validated through the ability of the updated VHE model to reproduce the final shape, the pressure evolution and the tension of the rod during an industrial blowing of PET bottles.
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.26428