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International Journal of Forming Processes
1292-7775
Publication suspended
 

 ARTICLE VOL 8/4 - 2005  - pp.429-450  - doi:10.3166/ijfp.8.429-450
TITLE
Analysis of Gaz Pressure Effect during the Thermoplastic Membrane Blowing using the Dynamic Finite Element Method

ABSTRACT
The present paper deals with the modelling and simulation using the dynamic finite element method of the viscoelastic behaviour of a thin, isotropic and incompressible thermoplastic membrane during a blowing process. The viscoelastic behaviour of the Lodge model is considered. The inflation of the membrane is controlled by the gas flowing into the enclosed volume. The dynamic pressure loading used in modeling is thus deduced from the pressure law of perfect gases. The lagrangian formulation together with the assumption of the membrane theory is used. Numerical validation is performed by comparing the obtained results with measured experimental data for the polymeric ABS membrane inflation. Moreover, the air flow influence on the inflation of bubble in the case of a Lodge constitutive model is analysed for five different loadings.


AUTEUR(S)
Fouad ERCHIQUI, Driss DIRI, Majid BOUOYOUN, Abdel Hakim BENDADA

KEYWORDS
Viscoelasticity, Biaxial Deformation, Finite Element, Thermoforming.

LANGUE DE L'ARTICLE
Anglais

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