A new constitutive model for polymeric matrices: Application to biomedical materials

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dc.contributor.author García González, Daniel
dc.contributor.author Garzón Hernández, Sara
dc.contributor.author Arias Hernández, Ángel
dc.date.accessioned 2021-04-21T10:54:09Z
dc.date.available 2021-04-21T10:54:09Z
dc.date.issued 2018-04-15
dc.identifier.bibliographicCitation Garcia-Gonzalez, D., Garzon-Hernandez, S. & Arias, A. (2018). A new constitutive model for polymeric matrices: Application to biomedical materials. Composites Part B: Engineering, vol. 139, pp. 117-129.
dc.identifier.issn 1359-8368
dc.identifier.uri http://hdl.handle.net/10016/32445
dc.description.abstract Semi crystalline polymeric composites are increasingly used as bearing material in the biomedical sector, mainly because of their specific mechanical properties and the new advances in 3D printing technologies that allows for customised devices. Among these applications, total or partial prostheses for surgical purposes must consider the influence of temperature and loading rate. This paper proposes a new constitutive model for semi-crystalline polymers, commonly used as matrix material in a wide variety of biomedical composites, that enables reliable predictions under a wide range of loading conditions. Most of the recent models present limitations to predict the non-linear behaviour of the polymer when it is exposed to large deformations at high strain rates. The proposed model takes into account characteristic behaviours of injected and 3D printed thermoplastic polymers such as material hardening due to strain rate sensitivity, thermal softening, thermal expansion and combines viscoelastic and viscoplastic responses. These viscous-behaviours are relevant for biomedical applications where temperature evolution is expected during the deformation process due to heat generation induced by inelastic dissipation, being essential the thermo-mechanical coupling consideration. The constitutive model is formulated for finite deformations within a thermodynamically consistent framework. Additionally, the model is implemented in a finite element code and its parameters are identified for two biomedical polymers: ultra-high-molecular-weight polyethylene (UHMWPE) and high density polyethylene (HDPE). Finally, the influence of viscous behaviours on dynamic deformation of semi-crystalline polymeric matrices is analysed.
dc.format.extent 13
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2017 Elsevier Ltd.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Biomedical materials
dc.subject.other Polymer-Matrix Composites (PMCS)
dc.subject.other Constitutive model
dc.subject.other Uhmwpe composites
dc.title A new constitutive model for polymeric matrices: Application to biomedical materials
dc.type article
dc.subject.eciencia Materiales
dc.identifier.doi https://doi.org/10.1016/j.compositesb.2017.11.045
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. DPI2014-57989-P
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 117
dc.identifier.publicationlastpage 129
dc.identifier.publicationtitle Composites Part B: Engineering
dc.identifier.publicationvolume 139
dc.identifier.uxxi AR/0000021426
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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