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Article

Numerical Approach for the Assessment of Micro-Textured Walls Effects on Rubber Injection Moulding

Instituto Tecnológico de Aragón (ITAINNOVA), C/María de Luna, n°7-8, 50018 Zaragoza, Spain
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Academic Editor: Juan Lopez Valentin
Polymers 2021, 13(11), 1739; https://doi.org/10.3390/polym13111739
Received: 29 April 2021 / Revised: 20 May 2021 / Accepted: 21 May 2021 / Published: 26 May 2021
(This article belongs to the Special Issue Rubber Materials: Processes, Structures and Applications)
Micro-surface texturing of elastomeric seals is a validated method to improve the friction and wear characteristics of the seals. In this study, the injection process of high-viscosity elastomeric materials in moulds with wall microprotusions is evaluated. To this end, a novel CFD methodology is developed and implemented in OpenFOAM to address rubber flow behaviour at both microscale and macroscale. The first approach allows analyzing the flow perturbation induced by a particular surface texture and generate results to calculate an equivalent wall shear stress that is introduced into the macroscale case through reduced order modelling. The methodology is applied to simulate rubber injection in textured moulds in an academic case (straight pipe) and a real case (D-ring seal mould). In both cases, it is shown that textured walls do not increase the injection pressure and therefore the manufacturing process is not adversely affected. View Full-Text
Keywords: rubber; seals; injection moulding; surface texture; modelling; computational fluid dynamics; reduced order model rubber; seals; injection moulding; surface texture; modelling; computational fluid dynamics; reduced order model
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MDPI and ACS Style

García-Camprubí, M.; Alfaro-Isac, C.; Hernández-Gascón, B.; Valdés, J.R.; Izquierdo, S. Numerical Approach for the Assessment of Micro-Textured Walls Effects on Rubber Injection Moulding. Polymers 2021, 13, 1739. https://doi.org/10.3390/polym13111739

AMA Style

García-Camprubí M, Alfaro-Isac C, Hernández-Gascón B, Valdés JR, Izquierdo S. Numerical Approach for the Assessment of Micro-Textured Walls Effects on Rubber Injection Moulding. Polymers. 2021; 13(11):1739. https://doi.org/10.3390/polym13111739

Chicago/Turabian Style

García-Camprubí, María, Carmen Alfaro-Isac, Belén Hernández-Gascón, José R. Valdés, and Salvador Izquierdo. 2021. "Numerical Approach for the Assessment of Micro-Textured Walls Effects on Rubber Injection Moulding" Polymers 13, no. 11: 1739. https://doi.org/10.3390/polym13111739

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