An engineering model that simulates pantographing occurring in the shaping process of reinforced uncured rubber parts / B. Debbaut in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 1 (03/2017)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 1 (03/2017) . - p. 84-89 Titre : An engineering model that simulates pantographing occurring in the shaping process of reinforced uncured rubber parts Type de document : texte imprimé Auteurs : B. Debbaut, Auteur Année de publication : 2017 Article en page(s) : p. 84-89 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caoutchouc Composites à fibres Composites thermoplastiques Matériaux -- Déformations géométriques et dimensionnelles Pantographie Simulation par ordinateur Index. décimale : 668.4 Plastiques, vinyles Résumé : When a material volume consisting of an uncured rubber matrix reinforced with two non-parallel sets of embedded reinforcement wires or cords is subjected to large deformations, pantographing may occur. In other words, the angles between reinforcement wires change. We introduce a simple phenomenological fluid model suitable for the numerical prediction of pantographing, as can be encountered in industrial processes such as the manufacturing of rubber tires or reinforced hoses. The reinforced material is described with an orthotropic continuous fluid model. Here the reinforcement wires or cords are accounted for by the orthotropy, whose direction is locally affected by the deformation undergone by the matrix, and is updated accordingly. The model is subsequently applied to the simulation of a sagging experiment, where the role of pantographing is illustrated. Note de contenu : - Model constructions - Application : simulation of pantographing DOI : 10.3139/217.3287 En ligne : https://drive.google.com/file/d/1BYlGJvH8jnMbbNL1spJjoK4261YfAkB9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28004 [article]

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The matching of experimental polymer processing flows to viscoelastic vumerical simulation / Jean-François Agassant in INTERNATIONAL POLYMER PROCESSING, Vol. XVII, N° 1 (03/2002)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XVII, N° 1 (03/2002) . - p. 3-10 Titre : The matching of experimental polymer processing flows to viscoelastic vumerical simulation Type de document : texte imprimé Auteurs : Jean-François Agassant, Auteur ; F. Baaijens, Auteur ; A. Bernnat, Auteur ; A. C. B. Bogaerds, Auteur ; T. Coupez, Auteur ; B. Debbaut, Auteur ; A. L. Gavrus, Auteur ; A. Goublomme, Auteur ; M. van Gurp, Auteur ; R. J. Koopmans, Auteur ; H. M. Laun, Auteur ; K. Lee, Auteur ; O. H. Nouatin, Auteur ; M. R. Mackley, Auteur ; G. W. M. Peters, Auteur ; G. Rekers, Auteur ; W. M. H. Verbeeten, Auteur ; Bruno Vergnes, Auteur ; M. H. Wagner, Auteur ; E. Wassner, Auteur ; W. F. Zoetelief, Auteur ; H. Bastian, Auteur Année de publication : 2002 Article en page(s) : p. 3-10 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : This paper describes work carried out in order to match experimental processing flows to numerical simulations. The work has brought together a consortium that has developed reliable experimental methods by which processing flows can be achieved in the laboratory and then ranked against numerical simulation. A full rheological characterisation of a selected range of polymers was made and the results compared from different laboratories. The data was fitted to a number of rheological models. Multi-mode parameter fitting was universal for the linear viscoelastic response. Particular attention was paid to the non linear response of the material. Prototype industrial flow experiments were carried out for a number of geometries in different laboratories and the flow birefringence technique was used to map out the experimentally observed stress fields for different polymers in a range of complex flows that contained both extensional and shear flow components. Numerical simulation was carried out using a number of algorithms and a range of constitutive equations. In order to make a quantitative comparison between experiment and simulation, an Advanced Rheological Tool (ART) module was developed that was able in some cases to quantify the level of fit between the numerically predicted and the experimentally observed stress patterns. In addition the ART module was able to optimise certain non-linear parameters in order to improve the quality of fit between experiment and simulation. Note de contenu : - Rheological characterisation and choice of constitutive equation - Prototype industrial flows (PIF) - Numerical simulation - The ART module - Conclusions and future perspectives DOI : 10.3139/217.1675 En ligne : https://drive.google.com/file/d/1-xYcLm5cmWTCdrcTRx-sugAgOaEiZqnR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15955 [article]

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