Process simulation-based design, mold construction and mechanical performance evaluation of an insert-injection molded themoplastic polyurethane part / C. Quintana in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 4 (08/2020)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXV, N° 4 (08/2020) . - p. 385-397 Titre : Process simulation-based design, mold construction and mechanical performance evaluation of an insert-injection molded themoplastic polyurethane part Type de document : texte imprimé Auteurs : C. Quintana, Auteur ; Nahuel Rull, Auteur ; P. J. Deniro, Auteur ; P. Frontini, Auteur ; F. Rueda, Auteur Année de publication : 2020 Article en page(s) : p. 385-397 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conception technique Insert (technologie) En plasturgie ou fonderie, un insert désigne une pièce d'un matériau infusible incluse dans la pièce fabriquée. Cet élément sert en général à la fixation ultérieure d'éléments mécaniques ou sert de renfort (exemple : chemise d'usure). Moules d'injection Polyuréthanes Retrait au moulage Simulation par ordinateur Thermoplastiques -- Moulage par injection Index. décimale : 668.4 Plastiques, vinyles Résumé : This paper presents a case study of simulation-based design and experimental validation of the insert-injection molding process of a complex polyurethane part. The part under consideration is a dowel holder which is a machine element used in the concrete railway sleepers production. A simulation study was carried out to define the relevant mold design options and optimal molding parameters as well as to evaluate their influence on the part's quality indexes. Simulation was performed using the software Moldex3D. The mold was constructed according to the optimization analysis and a batch of pieces was manufactured under the optimized conditions. A mechanical testing experiment – representing the actual service loading conditions – was designed and performed to validate the mold and process designs and the part performance. Simulation and statistical analysis results allowed determining those conditions that lead to a better assembly between the part and the metallic insert and to its structural integrity. The mechanical performance evaluation demonstrated that the part meets all its functional and structural requirements, validating simulation predictions. Note de contenu : - PART DESCRIPTION AND FUNCTIONALITY - MATERIALS : Part - Insert and mold - SIMULATION DETAILS - ANALYSIS AND RESULTS : Process simulation - Mold construction and injection - Shrinkage - MECHANICAL TESTING : Description of the experiment - Results and analysis DOI : https://doi.org/10.3139/217.3949 En ligne : https://drive.google.com/file/d/1bJHnHl9zm_wlt71C4RDFpMiTMtgDb-Td/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34697 [article]

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