Thermal Fe Analysis of Powder Bed Fusion Process: Power Input Evaluation and Parameter Sensitivity

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dc.contributor.advisorCzekanski, Alex
dc.creatorMoraes, Diego Augusto De
dc.date.accessioned2018-11-21T13:55:58Z
dc.date.available2018-11-21T13:55:58Z
dc.date.copyright2018-08-14
dc.date.issued2018-11-21
dc.date.updated2018-11-21T13:55:58Z
dc.degree.disciplineMechanical Engineering
dc.degree.levelMaster's
dc.degree.nameMASc - Master of Applied Science
dc.description.abstractWe investigated the thermal behavior of the powder bed fusion (PBF) manufacturing process. Specifically, a finite element thermal analysis procedure was developed to simulate selective laser melting, one of several PBF processes available on the market. The primary objective was to study how selected parameters of the PBF process affect temperature distributions, since a high temperature gradient and cooling rate are associated with residual stress and deformation in the built part. Since it was difficult to devise an analytical solution for this transient thermal problem, commercially available finite element analysis software, Abaqus, was employed. Sensitivity analysis was undertaken to analyze the impact of powder diameter, packing density, and substrate temperature on the overall temperature distributions. Finally, verification and validation were performed via experimental setup and data from the literature. The samples built were characterized by residual stress measurements, porosity, and relative density to further validate the model.
dc.identifier.urihttp://hdl.handle.net/10315/35580
dc.language.isoen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectMechanical engineering
dc.subject.keywordsAdditive manufacturing
dc.subject.keywordsSelective laser melting
dc.subject.keywordsDirect metal laser sintering
dc.subject.keywordsFinite element analysis
dc.subject.keywordsTemperature distributions
dc.subject.keywordsResidual stresses
dc.subject.keywordsEffective thermal conductivity of powders
dc.subject.keywordsParameter sensitivity
dc.titleThermal Fe Analysis of Powder Bed Fusion Process: Power Input Evaluation and Parameter Sensitivity
dc.typeElectronic Thesis or Dissertation

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