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dc.contributor.authorSilva, Gabriel de Paiva-
dc.contributor.authorOliveira, Déborah de-
dc.contributor.authorMalcher, Lucival-
dc.date.accessioned2024-05-20T14:34:14Z-
dc.date.available2024-05-20T14:34:14Z-
dc.date.issued2023-06-07-
dc.identifier.citationSILVA, Gabriel de Paiva; OLIVEIRA, Déborah de; MALCHER, Lucival. Numerical study of the minimum uncut chip thickness in micro‑machining of Inconel 718 based on Johnson–Cook isothermal model. The International Journal of Advanced Manufacturing Technology, [S. l.], v. 127, p. 2707–2721, 2023. DOI: https://doi.org/10.1007/s00170-023-11573-0.pt_BR
dc.identifier.urihttp://repositorio2.unb.br/jspui/handle/10482/48106-
dc.language.isoengpt_BR
dc.publisherSpringerpt_BR
dc.rightsAcesso Restritopt_BR
dc.titleNumerical study of the minimum uncut chip thickness in micro‑machining of Inconel 718 based on Johnson–Cook isothermal modelpt_BR
dc.typeArtigopt_BR
dc.subject.keywordMétodo dos elementos finitospt_BR
dc.subject.keywordPlasticidadept_BR
dc.identifier.doihttps://doi.org/10.1007/s00170-023-11573-0pt_BR
dc.relation.publisherversionhttps://link.springer.com/article/10.1007/s00170-023-11573-0pt_BR
dc.description.abstract1Traditional machining in micro-scale still presents many challenges associated with bad chip formation, presence of high burrs, elevated tool wear and low surface quality. Most problems in micro-machining are a consequence of the size efect, which is the similarity in the scale sizes of the cutting-edge radius of the tool and the minimum uncut chip thickness (MUCT). Micro-machining tends to be even more challenging for low-machinability alloys, such as Inconel 718. Through the fnite ele ment method (FEM), it is possible to estimate the minimum uncut chip thickness of a material providing that the constitutive model that describes its elastoplastic behavior is known. Therefore, the objective of this contribution is to analyze the chip formation in orthogonal micro-cutting of Inconel 718 using numerical FEM simulations and the Johnson–Cook plasticity model in an explicit scheme. Two cutting tools were modelled with diferent edge radius in order to represent a sharp tool and a tool that sufered rounding of the tip because of wear. Simulations were carried out with diferent values of feed per tooth in order to determine which value is closest to MUCT. The Mises stress and accumulated plastic strain were monitored, as well as the cutting forces. The results show that the rounded tool, with an edge radius of 5 µm, leads to higher forces, worse chip formation and worse surface quality when compared to the sharp tool, with an edge radius of 1 µm.pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3654-4953pt_BR
dc.contributor.affiliationUniversity of Brasília, Faculty of Technology, Department of Mechanical Engineeringpt_BR
dc.contributor.affiliationUniversity of Brasília, Faculty of Technology, Department of Mechanical Engineeringpt_BR
dc.contributor.affiliationUniversity of Brasília, Faculty of Technology, Department of Mechanical Engineeringpt_BR
dc.description.unidadeFaculdade de Tecnologia (FT)pt_BR
dc.description.unidadeDepartamento de Engenharia Mecânica (FT ENM)pt_BR
dc.description.ppgPrograma de Pós-Graduação em Ciências Mecânicaspt_BR
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