Applicability of a Material Constitutive Model Based on a Transversely Isotropic Behaviour for the Prediction of the Mechanical Performance of Multi Jet Fusion Printed Polyamide 12 Parts

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dc.contributor.authorPerez-Barcenilla, Sergio
dc.contributor.authorCearsolo, Xabier
dc.contributor.authorAramburu, Amaia
dc.contributor.authorCastano-Alvarez, Ruben
dc.contributor.authorCastillo, Juan R.
dc.contributor.authorGayoso Lopez, Jorge
dc.contributor.institutionECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓN
dc.contributor.institutionCaracterización y Validación. Mecánicos
dc.date.accessioned2024-08-20T10:25:01Z
dc.date.available2024-08-20T10:25:01Z
dc.date.issued2024-01
dc.descriptionPublisher Copyright: © 2023 by the authors.
dc.description.abstractMulti Jet Fusion (MJF), an innovative additive manufacturing (AM) technique in the field of Powder Bed Fusion (PBF) developed by Hewlett-Packard (HP) Inc. (Palo Alto, CA, USA), has been designed to produce polymer parts using thermoplastic-based powders, primarily focusing on polyamide 12 (PA12). Employing a layer-by-layer approach, MJF enables the rapid production of intricate components, reportedly up to 10 times faster than other AM processes. While the mechanical properties of MJF-printed PA12 and the impact of build orientation on those properties have already been explored in various studies, less attention has been given to the mechanical performance of MJF-printed PA12 components under complex loads and accurate predictive models. This contribution aims to assess the applicability of a constitutive model based on a transversely isotropic behaviour under linear elastic deformation for predicting the mechanical response of MJF-printed PA12 parts through numerical simulations. Both uniaxial tensile and shear tests were carried out on printed samples to determine the elastic properties of MJF-printed PA12, with additional testing on printed complex handle-shaped parts. Finally, a numerical model was developed to simulate the mechanical tests of the handles. Results from tests on printed samples showed that MJF-printed PA12, to some extent, behaves as a transversely isotropic material. Furthermore, using a constitutive model that assumes a transversely isotropic behaviour under linear elastic deformation for predicting the mechanical response of MJF-printed PA12 parts in numerical simulations could be a reasonable approach, provided that the material stress levels remain within the linear range. However, the particularities of the stress-strain curve of MJF-printed PA12 complicate determining the elasticity-to-plasticity transition point.en
dc.description.sponsorshipThis research was financially supported by the ELKARTEK program funded by the Basque Government through the ADDIMORF project (grant number KK-2021/00062).
dc.description.statusPeer reviewed
dc.identifier.citationPerez-Barcenilla , S , Cearsolo , X , Aramburu , A , Castano-Alvarez , R , Castillo , J R & Gayoso Lopez , J 2024 , ' Applicability of a Material Constitutive Model Based on a Transversely Isotropic Behaviour for the Prediction of the Mechanical Performance of Multi Jet Fusion Printed Polyamide 12 Parts ' , Polymers , vol. 16 , no. 1 , 56 . https://doi.org/10.3390/polym16010056
dc.identifier.doi10.3390/polym16010056
dc.identifier.issn2073-4360
dc.identifier.urihttps://hdl.handle.net/11556/4740
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85181851069&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofPolymers
dc.relation.projectIDEusko Jaurlaritza, KK-2021/00062
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsadditive manufacturing
dc.subject.keywordsanisotropy
dc.subject.keywordsmaterial constitutive models
dc.subject.keywordsmechanical properties
dc.subject.keywordsmulti jet fusion
dc.subject.keywordspolyamide 12
dc.subject.keywordsGeneral Chemistry
dc.subject.keywordsPolymers and Plastics
dc.subject.keywordsSDG 9 - Industry, Innovation, and Infrastructure
dc.titleApplicability of a Material Constitutive Model Based on a Transversely Isotropic Behaviour for the Prediction of the Mechanical Performance of Multi Jet Fusion Printed Polyamide 12 Partsen
dc.typejournal article
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